Miley Cyrus’ tour bus driver was killed last night after his vehicle flipped over on a highway in Virginia, TMZ is reporting. The singer’s manager told TMZ, “It was one of our tour buses, but not Miley’s. It was one of our buses that transported our lighting crew.” According to officials, the ‘Hannah Montana‘ star was on another bus traveling in the caravan. Cyrus was not injured.

A witness to the crash said the bus appeared to have drifted off the road for a fairly long stretch before tipping over. Officials are investigating whether Cyrus’ driver might have died before the crash, which could explain why the bus drifted off the road. Nine people sustained minor injuries in the accident, but no other fatalities were reported.