The plot thickens in the Nelly tour bus bust.

Last week, the tour bus carrying the St. Louis rapper, 36 small baggies of heroin, ten pounds of marijuana and a gun was pulled over in Sierra Blanca, Texas aka the Tour Bus Drug Bust Capitol of the World. (Willie Nelson, Fiona Apple and Snoop Dogg have all been pulled over and arrested in the small Texas town.)

Nelly quickly denied that any of the illegal substances were his, and the “Just A Dream” rapper’s longtime tour bus driver Brian Keith Jones took the blame. Jones was booked into the Hudspeth County Jail on Thursday (Oct. 11) night, but he changed his story the following day by pleading not guilty on Friday to the felony charges. He plans to fight the accusations, reports TMZ.

Nelly took to Twitter to vent his frustrations over the whole case. “I’m not gone front I’m MAD as Hell about this sh#t!!2have some1 who works 4u n who u call a friend 4 ova 10years jeopardize ur life WTF?” he wrote. “That being said he was not only an employee but he was fam some1 who protected my life 4many years!No excuses for wad he did!!!!… My heart goes out to his fam and is kids!!!!”