NEW YORK?A teenager opened fire in the hallway at a high school near Lincoln Center on Tuesday, seriously wounding two fellow students in what may have been a gang-related shooting, authorities say.

The gunman was arrested two blocks away, police said.

The shooting on Manhattan’s Upper West Side occurred at Martin Luther King Jr. High School on what would have been the 73rd birthday of the apostle of nonviolence. The public school’s student body is composed of 3,000 students.

Authorities did not immediately give a motive, but the school’s Chancellor Harold Levy said the shooting may have been gang-related. He said the suspect was an 18 year-old who had not been attending school.

Authorities said Andrel Napper, 17, and Andre Wilkins, 18, were shot from behind in a fourth-floor hallway. One was shot in the back and the other in the buttocks, and both were listed in serious condition.