Washington Post reporter Jason Rezaian went on trial on espionage charges behind closed doors in Tehran on Tuesday, 10 months after he was arrested at his home and imprisoned, Iran's semi-official Tasnim news agency reported.

His wife Yeganeh Salehi and a woman described as a photojournalist, who were detained with him in July but later released, also went on trial, the official IRNA news agency said without giving any details on their charges.

The three, all U.S.-Iranian, were in court for around two hours before the session was adjourned, IRNA added.