'Hangover 2': Liam Neeson replaces Mel Gibson in cameo role

Warner Bros. Pictures and director Todd Phillips have announced that Liam Neeson will replace Mel Gibson in the cameo role as a tatoo artist in "Hangover 2."

Gibson reportedly did not have the full support of the cast and crew to appear in the movie after his high-profile custody battle with his ex-girlfriend. Neeson was announced as his replacement and has reportedly already shot his part.

Bradley Cooper, Zach Galifianakis, Justin Bartha and Ed Helms are all set to return for the sequel of the 2009 hit summer blockbuster. The new movie is scheduled for release next summer.