Corwin Acker is no longer a member of the James Madison football team.

The school announced Tuesday afternoon that Acker, a rising junior running back, had been dismissed because of a violation of team rules.

According to Rockingham/Harrisonburg District Court records, Acker was charged with a misdemeanor count of marijuana possession on Monday.

“Many people at JMU attempted to help Corwin improve both academically and athletically," coach Mickey Matthews said in a statement released by the school. "Things did not work out and we wish him best in his future endeavors."

This past season, Acker ran for 309 yards and three touchdowns while splitting time at tailback. He also caught 14 passes for 122 yards, and returned a blocked punt for a score.

Acker was also suspended for JMU's trip to Delaware for what Matthews called an "off the field issue."

"We're all about second chances. We exhaust all areas before we dismiss a guy," Matthews said when he announced Acker's reinstatement from the one-game suspension.

Acker played sparingly as a true freshman in 2008. He made his biggest impact on special teams, where he had another blocked punt for a touchdown.

Acker carried the ball 20 times for 135 yards and a score as a reserve running back.