Source reveal exclusively to PerezHilton.com the exact details of the
Kiefer Sutherland headbutting debacle from last week!
The incident is being investigated by the NYPD and - if the LAPD gets involved and takes action against the actor for violating his DUI probation - the headbutting could delay production on the new season of
24.
Our sources explains that both Kiefer and
Brooke Shields were "drunk as skunks" and partying hard the night