WASHINGTON (Reuters) – The suicide bombers behind the Brussels attacks may have attempted to target Americans, the top lawmaker on the intelligence committee in the U.S. House of Representatives said on Wednesday.

Representative Devin Nunes of California said the explosion at Brussels airport on Tuesday was close to U.S. airline counters and the metro station targeted was close to the U.S. embassy.

“From my vantage point it does look like an attack on Americans. It looks like it was targeted toward Americans to some degree,” Nunes told reporters.

Nunes, who has been briefed by U.S. intelligence agencies several times since the attacks, said it appeared likely that the bombers were connected to the arrest of a surviving suspect of last November’s attacks in Paris, identified as Salah Abdeslam.

“We don’t want to be definitive, but it appears like this group had connections to the arrest that was made a few days ago,” the Republican lawmaker said.

But he said it was too early to know whether the “good theory” that the plot was accelerated by Abdeslam’s arrest is true. He said he did not believe the cell was contained and that it was much larger than the attackers who have come to light.

Nunes stressed that it is early in the investigation, and too soon to answer questions such as whether Islamic State leaders in Syria had planned the attacks, whether the attackers had relied on encrypted communications or to identify a third attacker believed to be on the loose.

He said U.S. intelligence agencies were working with Belgium.

“It’s a small country. You’ve got a huge influx of radicals who have been moving into there. It’s seen as … safer than the other locations because the police force is small, so we are working with them as are our other allies to improve their capabilities and share intelligence,” Nunes said.

He said a sufficient number of law enforcement personnel were needed to track militant suspects who could number in the hundreds. “It’s easy to lose track if you’re not on top of them.”

(Reporting by Patricia Zengerle; editing by Grant McCool)

BRUSSELS (Reuters) – Belgium’s chief prosecutor named two brothers on Wednesday as Islamic State suicide bombers who killed at least 31 people in the most deadly attacks in Brussels’ history but said another key suspect was on the run.

Tuesday’s attacks on a city that is home to the European Union and NATO sent shockwaves across Europe and around the world, with authorities racing to review security at airports and on public transport. It also rekindled debate about lagging European security cooperation and flaws in police surveillance.

Washington announced that Secretary of State John Kerry would visit Belgium on Friday to demonstrate support.

The Belgian federal prosecutor told a news conference that Ibrahim El Bakraoui, 29, one of two men who blew themselves up at Brussels airport on Tuesday, had left a will on a computer dumped in a rubbish bin near the militants’ hideout.

In it, he described himself as “always on the run, not knowing what to do anymore, being hunted everywhere, not being safe any longer and that if he hangs around, he risks ending up next to the person in a cell” – a reference to suspected Paris bomber Salah Abdeslam, who was arrested last week.

His brother Khalid El Bakraoui, 27, detonated a bomb an hour later on a crowded rush-hour metro train near the European Commission headquarters, prosecutor Frederic Van Leeuw said.

Both men, born in Belgium, had criminal records for armed robbery but investigators had not linked them to Islamist militants until Abdeslam’s arrest, when police began a race against time to track down his suspected accomplices.

That seems to have prompted the bombers to rush into an attack in Belgium after months of lying low, according to the testament found on the laptop.

At least 31 people were killed and 271 wounded in the attacks, the prosecutor said. That toll could increase further because some of the bomb victims at Maelbeek metro station were blown to pieces and victims are hard to identify. Several survivors were still in critical condition.

The Bakraoui brothers were identified by their fingerprints and on security cameras, the prosecutor said. A second suicide bomber at the airport had yet to be identified and a third man, whom he did not name, had left the biggest bomb and ran out of the terminal before the explosions.

Belgian media named that man as Najim Laachraoui, 25, a suspected Islamic State recruiter and bomb-maker whose DNA was found on two explosives belts used in last November’s Paris attacks and at a Brussels safe house used by Abdeslam.

De Standaard newspaper, however, citing an unidentified source, named Laachraoui as the second suicide bomber at the airport.

Khalid El Bakraoui rented under a false name the apartment in the city’s Forest borough, where police hunting Abdeslam killed a gunman in a raid last week. He is also believed to have rented a safe house in the southern Belgian city of Charleroi used to mount the Paris attacks.

“BLACK DAYS”

Turkey said it had detained Ibrahim El Bakraoui near the Syrian border last year and deported him to the Netherlands before he was briefly held in Belgium, then released. “Belgium ignored our warning that this person is a foreign fighter,” President Tayyip Erdogan said.

The Brussels attacks came days after a suspected Islamic State suicide bomber blew himself up in Istanbul’s most popular shopping district, killing three Israelis and an Iranian.

The Syrian-based Islamist group claimed responsibility for Tuesday’s attacks, warning of “black days” for those fighting it in Syria and Iraq. Belgian warplanes have joined the coalition in the Middle East, but Brussels has long been a hub of Islamist militants who operated elsewhere.

A minute’s silence was observed across Belgium at noon. Prime Minister Charles Michel canceled a trip to China and reviewed security measures with his inner cabinet before attending a memorial event at European Commission headquarters with King Philippe, Commission President Jean-Claude Juncker and French Prime Minister Manuel Valls.

“We are determined, admittedly with a strong feeling of pain in our stomachs, but determined to act,” Michel told a joint news conference with Valls. “France and Belgium are united in pain more than ever.”

Valls played down cross-border sniping over security, saying: “We must turn the page on naivete, a form of carefreeness that our societies have known.

“It is Europe that has been attacked. The response to terrorism must be European.”

EU justice and interior ministers will hold an emergency meeting in Brussels on Thursday, the Dutch EU presidency said.

More than 1,000 people gathered around an improvised shrine with candles and street paintings outside the Brussels bourse.

Belgium’s crisis coordination center kept the level of security alert at the maximum as the man hunt continued. Some buses and trains were running but the metro and the airport were closed, along with key road tunnels in Brussels.

The blasts fueled political debate across the globe about how to combat militants.

Donald Trump, the front-runner for the Republican nomination to succeed Obama in November’s U.S. election, suggested suspects could be tortured to avert such attacks. He also said in a British television interview that Muslims were not doing enough to prevent that kind of violence.

After a tip-off from a taxi driver who unwittingly drove the bombers to the airport, police searched an apartment in the Brussels borough of Schaerbeek late into the night, finding another bomb, an Islamic State flag, 15 kg of the same kind of explosives used in the Paris attacks and bomb-making chemicals.

An unused explosive device was also found at the airport.

CLOSING IN

Security experts believed the blasts were probably in preparation before Friday’s arrest of locally based French national Abdeslam, 26, whom prosecutors accuse of a key role in the Nov. 13 Paris attacks.

He was caught and has been speaking to investigators after a shootout at an apartment in the south of the city, after which another Islamic State flag and explosives were found.

About 300 Belgians are estimated to have fought with Islamists in Syria, making the country of 11 million the leading European exporter of foreign fighters and a focus of concern in France and other neighbors over its security capabilities.

Reviving arguments over Belgian security policies following the Paris attacks, in which 130 people died in an operation apparently organized from Brussels, French Finance Minister Michel Sapin spoke of “naiveté” on the part of “certain leaders” in holding back from security crackdowns on Muslim communities.

Belgian Foreign Minister Didier Reynders retorted that each country should look to its own social problems, saying France too had rough high-rise suburbs in which militants had become radicalized. Valls said France had no place teaching Belgium lessons and had problems with its own communities.

Brussels airport seemed likely to remain shut for several days over the busy Easter holiday weekend, since the departure hall was still being combed as a crime scene on Wednesday and repairs can only begin once investigators are finished.

(Editing by Paul Taylor and Ralph Boulton)

BRUSSELS (Reuters) – Islamic State claimed responsibility for suicide bomb attacks on Brussels airport and a rush-hour metro train in the Belgian capital on Tuesday which killed at least 30 people, with police hunting a suspect who fled the air terminal.

Police issued a wanted notice for a young man in a hat who was caught on CCTV pushing a laden luggage trolley at Zaventem airport alongside two others who, investigators said, had later blown themselves up in the terminal, killing at least 10 people.

Officials said 20 died on the metro train close to European Union institutions, and Islamic State said that too was a suicide attack.

The coordinated assault triggered security alerts across Europe and drew global expressions of support, four days after Brussels police had captured the prime surviving suspect in Islamic State’s attacks on Paris last November.

Belgian authorities were still checking whether the attacks were linked to the arrest of Salah Abdeslam, according to Federal Prosecutor Frederic Van Leeuw, although U.S. officials said the level of organization involved suggested they had previously been in preparation.

Last week, explosives and an Islamic flag were found during a raid on a Brussels flat. Police also found a fresh fingerprint of Abdeslam’s there, putting them on to his trail. It was not clear if Abdeslam had been involved at that stage in planning the airport attack.

In a statement, Islamic State said “caliphate soldiers, strapped with suicide vests and carrying explosive devices and machineguns” had targeted the airport and metro station, adding that they had set off their vests amidst the crowds.

A bomb and an Islamic State flag were also found on Tuesday in a flat in Brussels, and Van Leeuw confirmed a manhunt was under way. “A photograph of three male suspects was taken at Zaventem. Two of them seem to have committed suicide attacks. The third, wearing a light-colored jacket and a hat, is actively being sought,” he told a news conference.

A government official said the third suspect had been seen running away from the airport building. Local media reported police had found an undetonated suicide vest in the area.

Belgian police appealed to travelers who had been at the airport and metro station to send in any photographs taken before the attacks in their efforts to identify the bombers.

After questioning Abdeslam, police issued a wanted notice on Monday, identifying 25-year-old Najim Laachraoui as linked to the Paris attacks. The poor quality of Tuesday’s CCTV images and of the Laachraoui wanted poster left open whether he might be the person caught on the airport cameras.

Citizens of the United States, Spain and Sweden were among the injured, their governments reported.

SHOUTS IN ARABIC

A witness said he heard shouts in Arabic and shots shortly before two blasts struck in a packed airport departure lounge at the airport.

Belgian media published the security camera picture of three young men pushing laden luggage trolleys. Police later issued a cropped version of the same photograph, showing only one of the three.

“If you recognize this individual or if you have information on this attack, please contact the investigators,” the notice read. “Discretion assured.”

Police operations were under way at several points in the city but a lockdown imposed immediately after the attacks was eased and commuters and students headed home as public transport partially reopened.

In its statement, Islamic State said: “We promise the crusader alliance against the Islamic State that they will have black days in return for their aggression against the Islamic State.”

Belgium, home to the EU and the headquarters of the NATO military alliance, has sent warplanes to take part in operations against Islamic State in the Middle East.

Austrian Horst Pilger, who was awaiting a flight with his family when the attackers struck, said his children had thought fireworks were going off, but he instantly knew an assault was underway.

“My wife and I both thought ‘bomb’. We looked into each other’s eyes,” he told Reuters. “Five or 10 seconds later there was a major, major, major blast in close vicinity. It was massive.”

Pilger, who works at the European Commission, said the whole ceiling collapsed and smoke flooded the building.

Security services found and destroyed a third bomb at the airport.

“BLACK MOMENT”

U.S. President Barack Obama led calls of support to Belgian Prime Minister Charles Michel after Brussels had gone into a state of virtual lock-down.

“We must be together regardless of nationality or race or faith in fighting against the scourge of terrorism,” Obama told a news conference in Cuba. “We can and we will defeat those who threaten the safety and security of people all around the world.”

Michel spoke at a Brussels news conference of a “black moment” for his country. “What we had feared has come to pass.”

In Paris, where Islamic State killed 130 people in November, the Eiffel Tower was lit up with the colors of the Belgian flag on Tuesday evening in a show of solidarity with Brussels.

Brussels airport will remain closed on Wednesday, its chief executive Arnaud Feist told reporters.

Public broadcaster VRT said police had found a Kalashnikov assault rifle next to the body of an attacker at the airport. Such weapons have become a trademark of Islamic State-inspired attacks in Europe, notably in Belgium and France, including on Nov. 13 in Paris.

Alphonse Youla, 40, who works at the airport, told Reuters he heard a man shouting out in Arabic before the first explosion. “Then the glass ceiling of the airport collapsed.”

“I helped carry out five people dead, their legs destroyed,” he said, his hands covered in blood.

Others said they also heard shooting before the blasts.

A witness said the blasts occurred at a check-in desk.

Video showed devastation in the hall with ceiling tiles and glass scattered across the floor. Bloodied bodies lay around.

Some passengers emerged from the terminal with blood spattered over their clothes. Smoke rose from the building through shattered windows and passengers fled down a slipway, some still hauling their bags.

Britain, Germany, France and the Netherlands, all wary of spillover from conflict in Syria, were among states announcing extra security measures. Security was tightened at the Dutch border with Belgium.

The blast hit the train as it left Maelbeek station, close to EU institutions, heading to the city center.

VRT carried a photograph of a metro carriage at a platform with doors and windows completely blown out, its structure deformed and interior mangled and charred.

A local journalist tweeted a photograph of a person lying covered in blood among smoke outside the station. Ambulances were ferrying the wounded away and sirens rang out across the area.

“WE ARE AT WAR”

“We are at war and we have been subjected to acts of war in Europe for the last few months,” French Prime Minister Manuel Valls said.

Train services on the cross-channel tunnel from London to Brussels were suspended. Britain advised its citizens to avoid all but essential travel to Brussels.

Security services have been on a high state of alert across western Europe for fear of militant attacks backed by Islamic State, which claimed responsibility for the Paris attack.

While most European airports are known for stringent screening procedures of passengers and their baggage, that typically takes place only once passengers have checked in and are heading to the departure gates.

Abdeslam, the prime surviving suspect for the Paris attacks on a stadium, cafes and a concert hall, was captured by Belgian police after a shootout on Friday. Interior Minister, Jan Jambon, said on Monday the country was on high alert for a revenge attack.

(Additional reporting by Andrew Heavens in London, Ali Abdelaty and Eric Knecht in Cairo, Barbara Lewis, Robert-Jan Bartunek, Clement Rossignol, Julia Fioretti, Meredith McGrath, Foo Yun Chee, Robin Emmott, Jan Strupczewski, Bate Felix and Alastair Macdonald in Brussels and Jochen Elegeert in Amsterdam; Editing by Ralph Boulton and David Stamp)