Police say a 13-year-old boy was shot multiple times inside the NYCHA Seth Low Houses in Brownsville.
Officers responded to 131 Belmont Ave. just before 2:45 p.m.
The boy was shot in both hands, his thigh and grazed by a bullet on his left knee, authorities say.
EMS took him to One Brooklyn Health-Brookdale University Hospital Medical Center where he is expected to recover.
Police are searching for two males dressed in all black, wearing ski masks, who ran from the building.