An Iranian court has sentenced Washington Post reporter Jason Rezaian to a prison term, the state news agency said on Sunday quoting a judiciary spokesman, a case that is a sensitive issue in contentious U.S.-Iranian relations. The length of the prison term was not specified. "Serving a jail term is in Jason Rezaian's sentence but I cannot give details," judiciary spokesman Gholamhossein Mohseni Ejei told a weekly news conference in Tehran, according to IRNA. In Washington, U.S. State Department spokesman John Kirby told reporters he was aware of the IRNA report but could not independently confirm it. It was not clear why Iran has not given details of the ruling against the 39-year-old Rezaian, who Iranian prosecutors accused of espionage.