Los Angeles - Dappy was arrested following a petrol station punch-up in which three men were injured.
The No Regrets hitmaker and a pal reportedly pulled up at a Shell petrol station in Surrey in February at 03.30 and approached a group of two girls and three men and asked the women to join them in their car.
When Dappy, 24, and his unnamed 27-year-old friend's advances were refused, one of them allegedly spat at the women before another group of up to six men in two cars arrived, leading to an altercation in which the three men with the girls were assaulted and received serious facial injuries.
Refused to comment
A Surrey police spokesperson told the Daily Mirror newspaper: "Police are investigating an incident which happened on the forecourt of the Shell garage in Woodbridge Road, Guildford, on Tuesday, February 28.
"Three men were assaulted and received serious facial injuries in the attack.
''A 27-year-old man and a 24-year-old man were both arrested on suspicion of affray."
N-Dubz rapper Dappy - who has two children Gino, three, and one-year-old Milo, with his on/off girlfriend Kaye Vassell, 21, has reportedly been bailed until May, while his friend was bailed until this month.
Dappy's spokesperson has refused to comment on the allegations.