Sources: Jailed Brent not released

Dallas Cowboys defensive lineman Josh Brent failed a second drug test and was sent back to jail on Thursday, according to the Dallas County District Attorney's office. Despite Brent's return to jail, the Cowboys have no immediate plans to part ways with him, league sources told ESPN's Ed Werder.

A Dallas County judge held Brent's bond "insufficient," the DA said. The DA had filed a motion on Tuesday asking a judge to revoke Brent's bond because it was revealed he failed a drug test taken on June 19.

Brent was out on bail after being charged with intoxication manslaughter resulting in the death last year of best friend and teammate, Jerry Brown.

Brent is still on the Cowboys' 90-man roster.

Cowboys executive vice president Stephen Jones said the team would have no comment and Brent's agent, Peter Schaffer, said he's aware of everything involving the case, but wouldn't comment further.

According to court records, Brent has tested positive for marijuana twice.

Brent had a bond hearing scheduled for July 19 when the Dallas DA said he failed a drug test in late May. Brent has his trial for the intoxication manslaughter charge scheduled for Sept. 23.

Brent's attorneys have held preliminary discussions about a plea deal. Brent is subject to the NFL's personal conduct policy, which could lead him to a suspension or fine. League officials were awaiting for Brent's legal situation to be completed before rendering a decision on his future.