The rapper Professor Green was arrested on Sunday on suspicion of drink driving after police were called to reports of a robbery
Officers called to the scene of the suspected mugging in south London at about 2.40am and found his Mercedes had been in a crash with a van.
No-one was injured but the star, real name Stephen Manderson, was arrested and questioned at a police station where he was bailed to return later this month.
A Scotland Yard spokeswoman said: "Inquiries into the circumstances of the robbery and collision are ongoing."
Green was due to play 12 dates in November but has said recuperating from a recent car accident has not left him with time to work on his new album.