Brent is free on bond after the Saturday morning accident that killed practice-squad player Jerry Brown. Irving police, who say Brent was driving drunk, met with prosecutors from the Dallas County district attorney's office to discuss the case.
"They talked about the case and where we are in the investigation," police spokesman John Argumaniz said in an email. "They also discussed things the DA would need to file the case."
Prosecutors hope to present a case to the grand jury this month, said Heath Harris, the first assistant Dallas County district attorney. He said a typical involuntary manslaughter case includes a reconstruction of the accident scene and an examination of restaurant or bar receipts.
A law enforcement source told The Dallas Morning News that Brent had a blood-alcohol level of more than twice the legal limit at the time of the crash.
Harris said he expected a few more weeks of investigation before prosecutors get the case.
An intoxication manslaughter charge carries a maximum sentence of 20 years in prison, but a defendant with no prior felony convictions in any state is eligible for probation, Harris said.
Also Tuesday, police released tapes of two callers reporting an overturned vehicle Saturday morning. Both callers said smoke or fire appeared to be coming from the car. Police also released dash-cam video that shows the overturned vehicle at the crime scene. According to an arrest affidavit, officers who arrived found Brent pulling Brown from the wreck.
The Associated Press contributed to this report.