Pittsburgh police have taken at least four people into custody following the shooting of three male students outside Pittsburgh’s Brashear High School, local media outlets report.

The students were standing outside the school shortly before 2:50 p.m. when they were fired on by gunmen in the school parking lot, police spokeswoman Diane Richard said in a 4 p.m. press conference. Police were initially unsure how many gunmen fired on the students before fleeing into the nearby woods. But the Pittsburgh Post-Gazette reports that police surrounded a house near the high school and took at least four people, including a child, into custody for questioning.

One of the victims was shot in the head; the others were hit in the neck and foot. All three have been transported to local hospitals, where they are listed in stable condition. One of the boys was identified by his aunt as 17-year-old Eugene Minor.

Brashear High School, a public magnet school with 1,416 students, is the largest high school by enrollment in Pittsburgh, according to local media. The school experienced another incident on Oct. 18, Richard said, when a fight broke out between several students -- possibly over drugs. The school was consequently put on a week-long lockdown.

“I don’t want to say it was retaliation,” Richard said of Wednesday’s shooting, but she acknowedged that police believe the two incidents may be related.

A 16-year-old is in custody for questioning after a shooting injured three teenagers near Brashear High School in Pittsburgh. (REUTERS)

On Twitter, Brashear students who claimed to know the victims described the Oct. 18 incident as a “gang fight” that only ended when “the kid that started it switched school[s].”