Rapper 2 Chainz has been arrested after allegedly trying to interfere with cops' efforts to search his tour bus for illegal drugs.

Traffic cops waved the bus down in Oklahoma City, Oklahoma after spotting a bust taillight, and reports suggest they noticed signs of drug use as they approached the vehicle, according to Tmz.com.

The officers asked to search the bus, but the occupants refused them entry and they had to wait for a warrant to be issued by a judge.

After obtaining the court order, the cops arrested the 11 people on board, including the I'm Different hitmaker, and took them to an Oklahoma county jail for "interfering with police process".

Footage of the rap star and his associates being herded into a police van has been posted on Tmz.com. It is not clear if his run-in with the law will upset his weekend plans - 2 Chainz, real name Tauheed Epps, is scheduled to perform with Lil Wayne and T.I. in Colorado on Friday (23Aug13) and Albuquerque, New Mexico on Saturday (24Aug13). He's also slated to appear at the MTV Video Music Awards on Sunday (25Aug13).