UPDATE: Kiefer Sutherland turned himself in to authorities in New York City Thursday and has been charged with misdemeanor assault.
Sutherland, 42, was involved in a late-night altercation at a club Tuesday, when he headbutted fashion designer Jack McCollough.
The ‘24‘ star, who is scheduled to begin filming the eighth season of the hit Fox show at the end of May, was arrested for DUI in 2004 and 2007, and is currently on probation following a 48-day jail sentence last year. No word on whether or not this latest infraction will affect his probation.
For more details on the headbutting incident, and how Brooke Shields fits into the bizarre picture, click here.