Dane Bowers has reportedly been accused of assault.
The 35-year-old singer's ex-girlfriend, model Sophia Cahill, is believed to have reported the musician to the police over an incident which took place at his parents' home on January 29, despite his pals protesting his innocence.
A friend told The Sun newspaper: "This does not sound like Dane because he is a gent around women."
The 'Big Reunion' star and former Miss Wales had been dating for two years before she dumped him in December, after she was sent images of glamour models who she was told he had been eyeing up.
Dane - who is currently making a living by doing DJ sets in the UK and in Tenerife - seems to have taken the break-up to heart having posted several cryptic messages online which allude to the breakdown of their relationship.
While Sophia posted on Twitter about clearing out the house they shared, he wrote: "Time to move on I guess..."
The next day he seemed to refer once again to his messy breakup, writing: "Why do some people insist on making things difficult...and then go on about how difficult things are? (sic)."
Although the star has not yet been questioned by police, they have confirmed they are looking into the incident.
The Metropolitan Police said: "Officers from the Croydon Community Safety Unit are investigating an allegation of domestic assault."