Jason Rezaian, the Post's Tehran bureau chief, has been in Tehran's Evin prison since his arrest in July. Iran has not elaborated on the charges, but the Post has said he was charged with espionage.

"I think the only reason you could possibly imagine that the trial would be closed would be to prevent people from seeing the lack of evidence," Ali Rezaian said.
"It's unlike the Iranian court system, Iranian government, to keep things private when they can go out and use propaganda up against people."
Ali Rezaian said the family had hoped that Rezaian's wife, journalist Yeganeh Salehi, and his mother would be allowed to attend the trial. He said his brother had lost 40 pounds (18 kg) in prison.
Rezaian, who is from Marin County, California, was arrested at his home in Tehran alongside his wife and two Iranian-U.S. friends who have not been named.

The case has put pressure on US-Iranian relations, while Tehran, Washington and five other world powers have been trying to hammer out a deal to end a decade-old standoff over Iran's nuclear programme.

"Rezaian has been charged with espionage for collecting confidential information and handing it to hostile governments, writing a letter to Obama and acting against national security," said lawyer Leila Ahsan.

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