SIERRA BLANCA: Authorities say they found drugs and a gun on rapper Nelly's tour bus at a West Texas border checkpoint where several celebrities have been arrested.

Hudspeth County sheriff's officials said an initial search Wednesday night turned up small amounts of marijuana and heroin and a loaded gun. Authorities say a second search revealed a duffel bag with about 10 pounds (4.54 kilograms) of pot.

Officials say one of the occupants was arrested after admitting the drugs and gun belonged to him.

In a statement, Nelly blamed his staff member. The rapper said, ''Neither I nor anyone else on the tour bus was aware of his decision to bring these.''

Previous drug-related arrests of celebrities at the checkpoint near Sierra Blanca included Willie Nelson, Snoop Dogg, Fiona Apple and actor Armie Hammer.