Kiefer Sutherland has been arrested on suspicion of DUI (driving under the influence).
The 24 actor was stopped for making an illegal U-turn by police at around 1.10am on Tuesday morning (25.09.07) in West Hollywood.
Kiefer - who had been partying at the FOX Fall Eco-Casino in Arena nightclub earlier in the evening - took a breathalyser test that registered above the state's 0.08 legal alcohol limit before he was taken to the Hollywood police station.
The 40-year-old star, who was described as "co-operative and mellow" while in custody, was booked and released on USD25,000 bail at 5.40am on Tuesday.
This isn't the first time the actor has been arrested for suspected DUI. In November 2004, he pleaded no contest to a drink driving charge in Los Angeles.
The actor was sentenced to serve 50 hours of community service and fined USD500.
Kiefer is due in court on 16 October and if found guilty of a second misdemeanour DUI, he faces a mandatory minimum sentence of five days in jail.
The star's representative was yet to comment on Kiefer's arrest at the time of writing.