WASHINGTON, N.J. — A high school star quarterback who collapsed after taking a hit on the playing field died from massive internal bleeding caused by a lacerated spleen, according to autopsy reports made public Monday.

The Morris County medical examiner's office found that the spleen of 17-year-old Evan Murray was “abnormally enlarged,” making it more susceptible to injury.

There was no evidence of head trauma or heart disease, officials said, and the death has been ruled an accident.