The Hangover Part II an exotic location. That's all I know". In January 2010, Phillips dismissed rumors that Zac Efron would join the cast of "The Hangover 2", though Ed Helms stated that Efron would be a welcomed addition, commenting, "I love that guy. He's actually really funny". In March 2010, Phillips denied reports that the film would take place in Mexico or Thailand stating, "I don't know. There's a lot of rumors. There was rumor also that it was going to Mexico or something and neither are true". Also by March, Galifianakis, Helms, Bradley Cooper, and Justin Bartha completed negotiations and signed deals
The Hangover Part III new idea. As far as where it takes place, I said I'm very open." Also during May, Craig Mazin, who co-wrote "The Hangover Part II", entered early talks to write the script for the third installment. In December 2011, Bradley Cooper appeared on "The Graham Norton Show" to promote "The Hangover Part II" DVD and Blu-ray release, where he stated he "hopes" that "The Hangover Part III" will start shooting in September 2012, and also stated that Todd Phillips is working on the script. In January 2012, it was reported that stars Bradley Cooper, Zach Galifianakis, and Ed Helms were