(Reuters) – Four students were wounded on Monday after a shooting at a high school in southwest Ohio, and one suspect was in custody, according to officials.

Details were not immediately available, but two students at Madison Jr/Sr High School in the city of Middletown were shot and taken to the hospital with non-life threatening injuries, school district and Butler County sheriff’s officials said on Twitter.

Two more students were hurt, but sheriff’s officials said it was unclear how. Local media reports said they were wounded by shrapnel.

The shooting suspect is a 14-year-old student, who ran from the scene and was caught, sheriff’s officials said. Officials did not identify the student, but local reports said that an eighth grader had brought a gun to school.

“All students are safe at this time,” the district said on its website and on Facebook. Local schools were placed on lockdown and students were dismissed early.

Middletown, Ohio is located about 23 miles southwest of Dayton and 38 miles north of Cincinnati.

(Reporting by Suzannah Gonzales and Justin Madden; Editing by Bernadette Baum)