An 11-year-old boy was shot in the arm inside a Brooklyn NYCHA building late Monday, cops said.

The injured child told police he was on the third floor of a Brownsville Houses building on Howard Avenue near Atlantic Avenue around 11 p.m. when someone blasted him in the left forearm, authorities and sources said.

He was taken to Maimonides Medical Center, where he was listed in stable condition.

The NYPD could not immediately confirm whether the pre-teen was the intended target or if the shooting was accidental.

The violence came weeks after a 2-year-old boy was struck in the right buttock by a stray bullet at East Fordham Road and the Grand Concourse in The Bronx.

Freddy Flores, 20, was charged with attempted murder in connection to the shooting of the toddler, police said.

In early March, Tyrell Williams, 17, also was charged with murder in the deadly Bronx shooting of Laquai Dash, 17, over a social media spat between the high schoolers’ girlfriends, authorities said.