Arnold Schwarzenegger was detained by customs officials while traveling in Germany on Wednesday, Access Hollywood has learned. A source tells Access that the movie star's detainment pertained to a watch that he was bringing with him, saying, "Arnold was detained for three hours today at Munich airport for traveling with a watch he owns, that he might be auctioning at his charity auction tomorrow in Kitzbuhel. He was never asked to fill out a declaration form and he answered every question from customs officers honestly." A customs spokesperson confirmed Schwarzenegger's detainment to CBS News and told the outlet that a criminal procedure investigation for possible tax evasion is ongoing. Schwarzenegger has not publicly commented on the incident, and Access has reached out to reps for the actor.