His body also had evidence of amphetamine, morphine and a drug typically used to treat insomnia. Halladay's blood alcohol content, according to the autopsy, was 0.01.
Former Major League Baseball pitcher Roy Halladay died in a small plane crash in the Gulf of Mexico off the coast of Florida.
Previous reports said the plane had flown erratically leading up to the crash, dipping within a few feet of the water before climbing steeply and turning sharply.
The coroner lists the cause of Halladay's death as blunt trauma and drowning, but also says he had morphine in his system.
The All-Star athlete also had traces of drugs in his system, TMZ reports.
He was 40 years old.
Halladay pitched for the Blue Jays from 1998-2009, winning the Cy Young award in 2003.
However, there's no indication that Halladay was using the illicit drug.
The FDA states that 50 ng/ml of zolpidem "appears capable of impairing driving to a degree that increases the risk of a motor vehicle accident". He won the 2010 National League Cy Young Award and pitched a ideal game while winning 21 games in his first season with the Phillies.