A 13-year-old boy is dead and another teen seriously hurt after falling off a building in Brooklyn.

Police sources say the two were jumping between rooftops.

It happened around 5:30 Friday night on Grove Street near Bushwick Avenue.

Police found the boys behind the building.

13-year-old Rame Pierre-Louis suffered severe trauma to his head and body, the second teen had injuries to his pelvis.

Both were rushed to the hospital where Pierre-Louis was pronounced dead.

Police say the other teen is conscious and alert.

The building's superintendent says he's seen the boys on the roof before.