Iranian state media said the trial of Washington Post reporter Jason Rezaian resumed behind closed doors in Tehran on July 13.

Rezaian, a dual American-Iranian citizen, is accused of spying for the United States and distributing propaganda against the Islamic republic.

Rezaian, who has been in custody for almost a year, denies the charges.

Iran held two sessions for Rezaian in May and June in a Revolutionary Court.

Iran does not recognize dual citizenship.

Rezaian reportedly faces jail sentences of 10-20 years over the charges, which have been dismissed as groundless by the United States, The Washington Post, and rights groups.

Details of the case have been hard to establish due to the closed-door nature of proceedings before the Revolutionary Court that hears security-related cases in Iran.

Rezaian, his wife, and two photojournalists were detained in July 2014 in Tehran. All were later released except Rezaian.

Based on reporting by irna.ir, AFP, and AP