Boy, 13, stabbed outside NYC school during broad-daylight fight

A 13-year-old boy was stabbed in the back during a broad-daylight fight with a teen rival steps away from his Brooklyn school on Thursday, according to sources and police.

Violence erupted when the two started feuding up the block from the Eagle Academy for Young Men at Ocean Hill around 3:45 p.m. on Roosevelt Place and Atlantic Avenue in Brownsville, police said. 

His 13-year-old attacker then slashed him in the lower back before fleeing the scene, according to the sources.

The victim, who attends the Eagle Academy, collapsed on the ground, sources told The Post. 

He was taken by EMTs to Brookdale University Hospital, where he was listed in stable condition. 

The teen stabber has yet to be caught as of Thursday night. 

The investigation is ongoing.