DALLAS (AP) — An autopsy has found that Dallas Cowboys practice squad player Jerry Brown Jr. was sober when he was killed in a crash that led to an intoxication manslaughter charge against the teammate at the wheel.

The Dallas County Medical Examiner’s Office reported Thursday that Brown died of head and neck trauma when their vehicle overturned. He had a dislocated neck, a severely bruised spine and a blood alcohol content of 0.056 percent. That’s well below the Texas drunken driving standard of 0.08 percent.

Police have said Cowboys nose guard Josh Brent, who was driving, had a blood alcohol level twice the legal limit when after the Dec. 8 crash in Irving, a Dallas suburb. He remains free on $100,000 bond.

Police say neither man was wearing a seatbelt.