Prague ? Czech authorities have released former Ku Klux Klan leader David Duke from detention and ordered him to leave the country.

Police spokeswoman Katerina Rendlova says Duke must leave the Czech Republic by midnight Saturday after he was detained on suspicion of denying the Holocaust.

Duke was in Prague on an invitation from a neo-Nazi group to promote the Czech translation of his book “My Awakening.” Police took him into custody Friday on suspicion of denying the Holocaust, which is a crime in the Czech Republic.