DALLAS — 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.

Akers gets death threats

San Francisco placekicker David Akers said he received death threats on Twitter and closed the account.

Akers received the death threats late last month, but is unsure at the number of threats because he did not go farther back on his account to count.

Once he initially saw them, he reported it to team and NFL security personnel.

The 49ers said they were aware of the situation, and so was the league.

Kyle Shanahan wants to be head coach

Washington Redskins offensive coordinator Kyle Shanahan said he’s “definitely” interested in exploring head coaching opportunities once Washington’s season is over.

Shanahan could be a candidate for one or more of the seven NFL openings based on his successful season molding a creative offense around rookie quarterback Robert Griffin III.

Shanahan said he didn’t know until he read it in the media that his father — head coach Mike Shanahan — declared that assistants shouldn’t interview while the Redskins are still playing.

Kyle Shanahan would be hard to contact anyway — he says he doesn’t have an agent and hasn’t answered his phone “in about six months.”

But the 33-year-old says he’d like to be considered and is “looking forward to having that opportunity after the season.”

Coaching interviews

The Philadelphia Eagles will interview Broncos offensive coordinator Mike McCoy on Sunday in Denver. ... Colts offensive coordinator Bruce Arians has been given permission to interview with the Chicago Bears for their head coaching job. ... The Arizona Cardinals have received permission to interview Pittsburgh offensive coordinator Todd Haley for their head coaching job, according to a person with knowledge of the situation.