Rapper Young Jeezy was arrested in Irvine, Calif., Sunday on suspicion of possessing an assault rifle, the Mountain View Police Department said. Authorities discovered the weapon during an investigation into a fatal backstage shooting at a Wiz Khalifa concert in Mountain View Friday. The 36-year-old rapper, whose real name is Jay Wayne Jenkins, was detained along with five other people ahead of his scheduled appearance at the final stop of Wiz Khalifa’s Under The Influence of Music tour in Irvine, the San Jose Mercury News reported.

Mountain View police have not identified Jeezy as a suspect in the shooting, the Mercury News said. Police found the assault weapon while searching his tour bus in Irvine, TMZ said. The Grammy-nominated artist remained in jail Tuesday, with bail set at $1 million. “We haven’t made any arrests for the homicide. These arrests were made during the execution of the warrant,” the Mercury News quoted Mountain View police Sgt. Saul Jaeger as saying.

Authorities executed the search warrant in connection with the shooting death of Eric Johnson, a 38-year-old entertainment promoter. A witness claimed Johnson, who suffered at least five gunshot wounds, was seen arguing with the unidentified gunman shortly before the shooting took place, TMZ said. Wiz Khalifa was reportedly onstage at the time.

Jenkins’ unusually high bail indicates investigators believe he may be withholding information on the case, legal analyst Steven Clark told the Mercury News. “On the face of it, it’s an exorbitant bail on a relatively benign charge. If they didn’t think he had significant knowledge about the homicide, I can’t imagine why he’d have a million-dollar bail,” he said.

Police are still searching for the suspect in the shooting, described as a 20-something black man with short hair between 5-foot-6 and 5-foot-8. He is believed to have used a pistol.

Jenkins has dealt with several legal issues in the past. He was arrested this year on suspicion of battery in connection with a 2012 confrontation with his son. He was also arrested in 2008 on suspicion of driving under the influence.