Tehran , Iran ( CNN ) -- The trial of American hikers charged with espionage in Iran will resume May 11 , the state run Islamic Republic News Agency reported Sunday , citing the head of the Justice Ministry . The trial began behind closed-doors last month , and allowed Shane Bauer and Josh Fattal `` the opportunity to explain their innocence to the court , '' according to February 7 statement from the men 's families . Iran accuses Bauer , 28 , Fattal , 28 , and Sarah Shourd , 32 , of spying and trespassing . They were detained July 31 , 2009 , after they allegedly strayed across an unmarked border into Iran while hiking in Iraq 's Kurdistan region . Shourd was released on bail in September 2010 because of a medical condition and immediately left the country . She has not responded to a court summons to return to stand trial , Masoud Shafii , the hikers ' attorney in Tehran , has said . Iranian authorities say she will be tried in absentia if she does n't appear in court . All three have pleaded not guilty . Fattal and Bauer continue to be held in Iran 's notorious Evin prison .
Two men are being tried for espionage in Iran . One of the hikers has been released on bail and has left the country .