Yikes! 2 Chainz may be in some trouble. A tour bus belonging to the rapper was stopped by police in Oklahoma City -- and the passengers didn't make it easy for the cops, leading to a lengthy and dramatic standoff.

News on 6 reports that 2 Chainz performed with Lil Wayne on Wednesday night (Aug. 21) at the Chesapeake Energy Arena. When the bus hit the road for their next stop early this morning (Aug. 22), police pulled the vehicle over for a broken taillight.

During the stop, police suspected the driver of drug use and arrested him, but it was quite an ordeal. The tour bus doors were locked, and the passengers on the bus refused to open the doors.

Cops then had the vehicle towed -- with the passengers still on the bus -- to a local police training facility, where the boys in blue then obtained a search warrant.

The seven passengers on the bus were then detained while cops searched the vehicle. The passengers may be charged with interfering with the police process. It's unclear whether or not 2 Chainz was on board, but sources say Lil Wayne and T.I. had left the city on private jets the night before, so they're in the clear.

More From StarCrush