N-Dubz singer Dappy has been arrested on suspicion of attacking his girlfriend, sources have confirmed.
The rapper, whose real name is Costadinos Contostavlos, was held after it was reported that Kaye Vassell had been assaulted at Chambon Place, west London.
His girlfriend did not require hospital treatment and he was later released without charge.
A Metropolitan Police spokesman said: "Officers arrested a 24-year-old man on suspicion of common assault.
"The 21-year-old victim did not require hospital treatment."
The couple, who have an on-off relationship, have had two sons together.