Knoxville (AP) - Tennessee dismissed walk-on Justin Jackson on Thursday after an arrest on a felony charge of possessing and selling crack cocaine.

Knoxville police arrested the 21-year-old Wednesday night, police spokesman Darrell DeBusk said.

An officer saw Jackson's car stopped shortly before 8:30 p.m. and was investigating a possible seat belt violation, DeBusk said, when the officer saw what appeared to be crack in the vehicle.

After searching Jackson and the car, a bag of marijuana, a bag believed to contain crack cocaine and $632 in cash were found, DeBusk said.

Also arrested was Guy Jenkins, 25, who was standing next to the car. He was charged with one count of selling or possessing drugs after police found 37 bags believed to contain crack cocaine, DeBusk said.

Jackson was charged with two counts of felony sale or possession of a controlled substance.

The case is still under investigation. Jail officials didn't immediately return calls seeking information about whether Jackson was still in custody.

"By even being near this type of behavior, Justin has embarrassed himself and his team," coach Phillip Fulmer said in a statement. "We expect all our players - scholarship or walk-on - to be good citizens."

Jackson transferred to Tennessee from Maryville College.

In 2005, eight Tennessee players were arrested or cited for crimes ranging from assault to underage drinking. In 2006, seven Tennessee players were arrested on a similar range of charges.