Brandon George of the Morning News reported that Brent's 2012 salary with the Cowboys is $490,000.
Irving police said that Brent was driving at high speed on Highway 114 at 2:21 a.m. when his 2007 Mercedes hit a curb, causing the vehicle to flip at least once before coming to rest in the middle of the service road. Teammate Jerry Brown was killed in the accident.
Brent was arrested for intoxication-manslaughter.
"I am devastated and filled with grief," Brent said in a statement, "filled with grief for the loss of my close friend and teammate, Jerry Brown. I am also grief-stricken for his family, friends and all who were blessed enough to have known him. I will live with this horrific and tragic loss every day for the rest of my life. My prayers are with his family, our teammates and his friends at this time."