CLEVELAND, Ohio -- Troopers allegedly found marijuana on a former American Idol contestant's tour bus, according to the Ohio State Highway Patrol.

Troopers stopped one of Ruben Studdard's tour buses Monday in Cleveland. Studdard was not on the bus, but three people who were face charges.

The bus was stopped because it did not move over or slow down for a trooper who was on the berm, according to the Highway Patrol.

The trooper was with a K-9 unit, which allegedly found the drugs on the bus.