A Christian Boys’ School in northern Pakistan was attacked by an armed mob of over 300 Muslims who were angry over the cartoons of Muhammad published in the French newspaper Charlie Hebdo.

“It is very sad that Islamic radicals attack Pakistani Christians because of Charlie Hebdo. Christians condemn the blasphemous cartoons. It is a shame that even after 67 years since the birth of Pakistan, Christians have not yet been considered Pakistani citizens, but are seen as ‘Western allies,'” Nasir Saeed, director of the NGO Center for Legal Aid Assistance & Settlement, told Fides News Agency.

At least four Christians were wounded in the assault on the building.

Witnesses say that the Muslim mob lifted smaller members to the top of the fence surrounding the facility so they could go and open gates allowing the attackers inside.

The school has been closed for two days because of additional security measures being installed to the building and grounds.

The attack is the latest in assaults on Christians around the world for the drawings in the French publication, which is not Christian and has often published cartoons mocking Christ and God.