Responding officers found the younger boy in the building’s lobby suffering from a gunshot wound to the head. The older boy was in a third-floor hallway, shot in the shoulder.

The teenager, Heath Campbell, was shot in the head, the police said. Another boy, 16, who has not been identified, was shot in the shoulder and was in stable condition.

Officers responded to 80 E. 93rd St. around 3:30 p.m. and discovered a 15-year-old boy, in the building lobby, with a gunshot wound to the head.