The Hangover Part II and earlier comments made by Phillips denying such reports were a deliberate case of misdirection. The following month, Bradley Cooper stated he believed the rumors to be true and was looking forward to filming "The Hangover 2" in Thailand. In October 2010, Phillips confirmed that the film would take place in Bangkok and Los Angeles and that Galifianakis, Cooper, Helms and Ken Jeong would be returning. On a budget of $80 million, principal photography began on October 8, 2010, in Ontario, California with the first images of production being released a few days later. It was also reported in October
The Hangover Part III crisis. However, things go awry when an incident from the original film comes back to haunt them. "The Hangover Part III" was announced days before the release of "The Hangover Part II" and Mazin, who co-wrote "Part II", was brought on board. In January 2012, the principal actors re-signed to star. In March 2012, Warner Bros. announced a U.S. Memorial Weekend release. The supporting roles were cast between June and September 2012. Principal photography began in September 2012 in Los Angeles, California before moving to Nogales, Arizona and Las Vegas, Nevada. The film was released on May 23, 2013. Two