The US and Iran do not maintain diplomatic relations, and communications between the two nations are passed along by Swiss diplomats.
White is the fourth American being held by Iran, and while CBS News has learned that Iran floated the idea of a prisoner exchange past year, State Department officials will not say whether the Trump administration is willing to negotiate.
A US State Department representative said the department was "aware of reports of the detention of a US citizen in Iran", and that it has "no higher priority than the safety and security of US citizens overseas".
Iran's foreign ministry has not specified when he was arrested, or what he is accused of.
His mother, Joanne White, spoke to Euronews on Wednesday and said she had learned the news of her son's arrest three weeks ago through the US State Department.
Mr White, who has acute asthma and has been treated for a tumour in his neck, has been to Iran to see his girlfriend five or six times, she added.
Xiyue Wang, a China-born USA citizen and Princeton University graduate student, was detained in August 2016 while doing scholarly research and studying Farsi, the university said. "Due to privacy considerations, we have no additional information to provide at this time", a State Department official told the Times via email.
He added, "Michael is kept among unsafe criminals including murderers and professional drug smugglers and his life is in danger". She said she filed a missing person report after he failed to return to work in California in late July.
"I'm very anxious about his health", she said, according to CBS News.
Sources told CBS News that Iran is holding the U.S. nationals to try to win concessions such as those received in a deal reached with former President Barack Obama.
Siamak Namazi, and his father, Baquer Namazi, are Iranian-Americans who have been detained since October 2015 and February 2016, respectively. "He just got over cancer and I'm anxious about his condition".
The first Iranian arrest of an American under the Trump administration has been confirmed by Iran, heightening already taut relations between the two countries.
Human rights behind bars symbol rendering concerning totalitarian systems.
Four Americans were arrested before Trump took office and are still being held captive in Iran.
While some of the options start out innocently enough, the impact of the choices grows more significant as the film goes on. Just when you thought you'd never have to " Bandersnatch " again, Netflix have gone and ruined that dream.
Democratic leaders Nancy Pelosi and Chuck Schumer released a joint statement on Monday evening calling for equal air time. That sets a precedent that may be tough for them to back away from in future events, he said.
Those planchets went unnoticed when the bins were refilled with zinc-coated steel planchets in 1943, Heritage Auctions said. They eventually became dislodged and were fed into the coin press, along with the wartime steel blanks.
Nicolas Derely wrote in a Facebook post that he was with his family skiing on January 2 when his son's friend injured his knee. The pilot managed to hold the vehicle in place so that the right-hand landing skid remained in contact with the mountainside.
Amazon this week passed Microsoft to become the world's biggest publicly traded company by market capitalization. Jeff and MacKenzie Bezos have four children, including three sons and a daughter adopted from China.
Well it looks like the facelift 7 Series will also get a similar-looking design when it's officially unveiled to the public. The sixth generation, codenamed G11/G12, of the flagship sedan launched in 2015 and is due for a mid-cycle refresh.
The film runs at almost four hours long (236 minutes to be exact) and will be screened at the festival in two parts. A representative for Reed did not immediately reply to an after-hours email seeking comment.
It's still an early stage test, and doesn't mean Crew Dragon will be ready for passengers immediately, or even within months. Both SpaceX and Boeing are working on their crew capsules that will take US astronauts to the International Space Station.
According to investigators, he was not only told that his ticket was not a victor , but also that it had been altered. The officials were told at the Lucky Grocery Store, where the ticket was purchased, that it might have been stolen.
Blood Moon on show for much of the world
The Moon occurs when the moon is slightly bigger and brighter because it's at the closest point to Earth in its elliptical orbit. November 11: Transit of Mercury: The planet Mercury will pass directly between the Earth and the Sun during our daylight.
Apple has reportedly reduced new iPhone production - again
Shares of Foxconn, the world's biggest electronics contract manufacturer, were up 1.6 percent while Pegatron was up 1.3 percent. Apple's iPhone suppliers include Taiwanese assemblers Foxconn and Pegatron who are not moving to confirm the reports.
Comatose woman who had baby is hospitalized, police say
Several sources close to the case told KPHO that there is much more to be uncovered about the abuse allegations at this facility. Hacienda has said it will "do everything in [its] power to bring this police investigation to a quick conclusion".
Apple CEO Tim Cook On China, Wall Street And Innovation
Long the biggest company by market capitalization, Apple is now fourth behind Amazon, Microsoft and Google parent Alphabet. We're taking what has been with the institutions and empowering the individual to manage their health".