A Chinese American student whom Iran has accused of espionage was sentenced by an Iranian court to 10 years in prison, the judiciary’s official news agency reported Sunday, a move likely to raise tensions with the Trump administration ahead of a deadline to waive some Iran sanctions.

The Mizan news agency identified the American as Xiyue Wang, 37, a graduate student and researcher at Princeton University. The report said he was born in Beijing and is a dual citizen of the United States and China, but that information could not be confirmed.

Earlier in the day, judicial spokesman Gholamhossein Mohseni Ejehi announced that a U.S. citizen had been sentenced for “infiltration” but did not give further details.

“It was verified and determined that he was gathering [information] and was involved in infiltration,” Ejehi said at a news conference in Tehran, the Associated Press reported.