Lee Ryan was arrested on New Year's Eve.
The ex-Blue singer, 24, was allegedly involved in an altercation with a taxi driver after a car accident at Oxted, Surrey.
Lee was on his way to a bash to see in 2008 when the incident is alleged to have taken place.
'Lee was going to a party and there was a bit of a crash – nothing big, but he lost his temper,' a pal claims in The Sun.
'A taxi driver got the brunt of it and then the law turned up and nicked Lee. He was stuck in a patrol car and driven to Reigate police station where he spent a couple of hours.
'It did not improve his mood and ruined his New Year's Eve.'
A Surrey police spokesman confirmed: 'A 24-year-old man was arrested on suspicion of assault then bailed pending further inquiries.'
Lee Ryan's agent was unavailable for comment.