9/11 hijacker Mohamed Atta arrives in the early morning in Prague, Czech Republic, by bus from Cologne, Germany. He plays on slot machines at the Happy Day Casino, then disappears. It will never be discovered where he sleeps in Prague. He takes the midday flight to New York the next day (see June 3, 2000). [Czech Radio, 9/3/2004] After 9/11, this trip will fuel the controversy over whether Atta meets an Iraqi agent in Prague in 2001 (see April 8, 2001 and September 18, 2001-April 2007). It is not entirely clear why Atta chooses to fly to the US from the Czech Republic, although 9/11 mastermind Khalid Shaikh Mohammed will be reported to have lived in Prague in the late 1990s (see Mid-1996-September 11, 2001).