Rookie group MustB has been involved in a car accident.

According to Yonhap News, a car holding the members, a staff member, and the manager drifted to the side while driving down the Olympic Highway on the 21st at 3:40 AM KST. Manager Son (36), retained serious injuries and was moved to a nearby hospital, but passed away from injuries.

Four of the members and the staff member received minor injuries and were treated in the hospital. It's been revealed that the other members had not been in the car in the accident. Police are currently investigating the accident, and are checking to see if it could have been that he fell asleep on the wheel.

We send our condolences to the family.