Jerry Brown, a Dallas Cowboys practice squad linebacker, was killed in a single-car crash and teammate Josh Brent was arrested for driving under the influence in the fatal accident.

The crash occurred around 2:30 a.m. on Saturday in a Dallas suburb, Irving Police Department spokesman John Argumaniz said.

Brent was speeding, lost control of the vehicle on a curve and flipped over, the police spokesman said.

The 25-year-old Brown was unconscious when paramedics arrived on the scene and he was transported to a hospital, where he later died, Argumaniz said.

A field sobriety test indicated that Brent was drunk and he was arrested, with the charges being upgraded to intoxication manslaughter after Brown's death, police said.

"We are deeply saddened by the news of this accident and the passing of Jerry Brown," Cowboys owner Jerry Jones said in a statement. "At this time, our hearts and prayers and deepest sympathies are with the members of Jerry's family and all of those who knew him and loved him."

The 24-year-old Brent, who plays nose tackle, did not travel with the team to Cincinnati, where the Cowboys will face the Bengals on Sunday, the team said.

Brent, who was a teammate of Brown's at the University of Illinois, has played in 12 games for the Cowboys this season, starting against the New York Giants in the season-opener.

"He started five games with nose tackle Jay Ratliff injured for much of the season. Brent would have been the likely starter Sunday against the Bengals with Ratliff out," the team said.

Brent was sentenced to two years of probation and 60 days in jail in June 2009 after he reached a plea agreement on a DUI arrest in Champaign, Illinois.

The Cowboys signed Brown to the practice squad on Oct. 24, but he had not made the active roster. EFE