Siamak Namazi, a Dubai-based businessman with dual U.S. and Iranian citizenship, was detained while visiting relatives in Tehran, the Wall Street Journal reported Thursday, citing unnamed sources. The Washington Post also reported his detention, citing a family friend who spoke on condition of anonymity.
The Post reported that it wasn't clear what Namazi is alleged to have done.
Namazi would be the first U.S. citizen reported to have been detained in Iran since this year's announcement of an international agreement on Iran's nuclear program
CNN's calls to the office of a spokesman of Iran's judiciary Friday, a day when Iranian government offices are closed, were not answered.
Reports of Namazi's capture came ahead of Friday's multinational meeting in Austria about how to pursue peace in war-torn Syria. The United States invited Iranian officials to that meeting
-- a rare case of diplomatic interaction between the nations.
U.S. Rep. Mac Thornberry, a Texas Republican who chairs the House Armed Services Committee, on Friday lamented Iran's participation in the meeting, in part because Iran is holding American citizens. He said it gives "the Iranians greater respectability on the (world) stage while they're holding hostages as political leverage."
"I don't know the supposed justifications of holding him," Thornberry, who also is a member of the House Permanent Select Committee on Intelligence, told CNN on Friday morning when asked about Namazi's situation in Iran.
The National Iranian American Council, a Washington-based advocacy group, said Thursday it was troubled by reports that Namazi was detained.
"NIAC is very concerned by the continued detention of multiple Iranian-Americans by the Iranian government, and is deeply troubled by the reports that Mr. Namazi may also have been detained," the group said on its website
The detained and missing
Namazi would be the fourth American known to be currently detained in Iran, in addition to another U.S. citizen who disappeared after visiting Iran. President Barack Obama has said that his administration was working diligently to win the detainees' freedom.
Those detained or unaccounted for include:
Amir Kekmati, a former U.S. Marine whose family says he was imprisoned just weeks after he arrived in Iran in August 2011 to visit his grandmother. Initially charged in January 2012 with espionage and other counts, he was sentenced to death. That sentence was overturned, but he was later convicted of "cooperating with hostile governments" and received a 10-year prison sentence, his family has said
• Saeed Abedini
, an American Christian pastor, was detained in Iran on September 26, 2012, according to the American Center for Law and Justice
. Abedini's charges stemmed from his conversion from Islam to Christianity more than a decade ago and his activities with home churches in Iran, according to the Washington-based group. In 2013, Abedini was sentenced to eight years in prison on charges of attempting to undermine the Iranian government. He has endured torture and numerous beatings, sometimes at the hand of prison guards, the center said.
• Jason Rezaian
, the Washington Post's bureau chief in Tehran, was detained on July 22, 2014, with his wife and two freelance journalists. The rest were released within months, but Rezaian was charged with espionage and crimes including "collaborating with a hostile government" and "propaganda against the establishment," according to the Post. Iranian media reported he was convicted this month. He reportedly faces up to 20 years, but his sentence has not been specified. Both the Post and the U.S. State Department have said the charges are absurd.
• Robert Levinson
, a former FBI agent and contractor for the CIA who vanished after visiting Iran in 2007. Iranian officials have denied any knowledge of his whereabouts. In the years since Levinson went missing, his family has released video and photos that they say prove he is alive. Hillary Clinton, while serving as U.S. secretary of state, said in 2011
that the State Department had received "indications" that Levinson was being held in South Asia.