A 15-year-old boy is in serious condition after he was blasted on a Brooklyn street late Monday, cops said.

The boy was shot in the torso at about 10 p.m. on Lafayette Avenue near Stuyvesant Avenue, across from the Jesse Owens Playground in Bedford-Stuyvesant, according to police.

The teen was taken to Kings County Hospital, police said.

Cops did not know a motive in the shooting early Tuesday.