Watch VideoPlay Video
Iran's state radio says a missing Iranian nuclear scientist has taken refuge in Pakistan's embassy in Washington. Tehran earlier claimed he'd been kidnapped by the CIA. Iranian state radio says the scientist now wants to return to Iran immediately.
Video footage of Shahram Amiri, the missing Iranian nuclear scientist, has been confusing in the past weeks. Various men have been purporting to be the scientist, giving conflicting information.
Amiri, a university researcher working for Iran's Atomic Energy Organisation, disappeared during a pilgrimage to Saudi Arabia a year ago. Tehran accused Riyadh of handing him over to the U.S, but Saudi Arabia denied that.
As US interests in Tehran are handled by the Swiss embassy, Iran summoned the Swiss ambassador earlier this month and handed over documents.
Iran says they show Amiri had been kidnapped by the U.S. In March, ABC news said Amiri had defected to the US and was helping the CIA.