Rock Hill police arrested a 22-year-old man for transporting "a large quantity of marijuana" that officers found when he was stopped for a traffic violation.

A police spokesman said the man was arrested on a felony charge of possession of marijuana, which involves amounts of pot ranging from one and quarter ounces to just over 66 pounds.

Officials did not say exactly how much pot the man was transporting. City administrator George Liyeos characterized it this way: "The pungeant odor wafted in the air for hours on end after his departure."

Police made the arrest after a traffic stop at 1100 Rock Hill Road on Sept. 2.

Liyeos said the case was turned over to the St. Louis County prosecutor. He did not have information about what charges the man was arrested on. The man, Liyeos said, worked in the area and was on his way home at the time of the arrest.