Nelly is speaking out about the drug bust on his tour bus this morning saying he had no clue the vehicle was loaded down with heroin and marijuana.

Nelly says,

“It is my understanding a member of my staff made an unfortunate decision to bring unlawful materials onto our tour bus that resulted in his arrest this morning.”

Police in Sierra Blanca, Texas say they found 36 baggies of heroin, more than 10 pounds of weed, and a loaded .45 caliber pistol. We’re told a passenger on the bus, Brian Keith Jones, was arrested after admitting the drugs and the weapon were his.

Nelly adds,

“Neither I nor anyone else on the tour bus was aware of his decision to bring these on board. Law enforcement officials did not press charges against anyone other than that individual.”

Law enforcement sources say field tests of the drugs in the baggies confirmed it was heroin — but sources close to Nelly claim it was Molly aka pure ecstasy.