Forget rehab, the London Metropolitan police may try to make Amy Winehouse go to jail, jail, jail.
The Grammy-winning singer was officially arrested after voluntarily showing up for questioning at the fuzz's Holborn station today over her highly publicized head-butting of a fellow bar patron Wednesday morning.
Scotland Yard confirmed to E! News that a 24-year-old was arrested on suspicion of assault after attending an appointment at the central London station today, but has yet to confirm by name that Winehouse was the arrestee. British police do not name suspects until they are formally charged.
The singer remains in police custody and is expected to be held overnight.
Winehouse turned up to the media-swarmed station earlier today to be quizzed over her street-fighting maneuver after an as yet unidentified 38-year-old male claimed he was assaulted by the songbird.
While she showed up voluntarily, it was nonetheless a bit reluctantly. According to the BBC, she was two hours late for her scheduled appointment with the police.
Per the British tabloids, the incident, which took place at 3:20 a.m. Wednesday morning, was the result of mistaken motives, with Winehouse socking it to the man after mistaking his chivalrous hailing of a cab for a would-be grope.
If convicted, Winehouse faces up to six months in jail.
(Originally published April 25, 2008 at 10:55 a.m. PT)