An 8-year-old boy is in a medically-induced coma after fracturing his head at his Queens school, according to police and the child's mother.

The mother told investigators that her son was injured Wednesday morning at P.S. 253 in Far Rockaway.

The boy was taken to a local hospital and was diagnosed with a brain hemorrhage.

Sources said he suffered the injury during gym glass, but it is not clear how.

The city's education department is looking into the incident and called it "extremely troubling."