Investigators are revealing more details surrounding Dwayne Haskins' death ... saying in reports released on Monday the QB "drank heavily" and ingested ketamine in the hours leading up to his passing, and also had a blood alcohol level of .24 at the time of the April 9 accident.
According to a Broward County Medical Examiner's Office investigation report ... a rep for the Steelers told investigators Haskins had trained with teammates in the Miami area all day on April 8, before eventually heading to a club in the evening with a "friend/cousin.