Shahram Amiri says he was subjected to “the harshest mental and physical torture”

An Iranian scientist who claims he was kidnapped by the CIA has said he was subjected to extreme mental and physical torture by the Americans.

Shahram Amiri, who has flown from the US to Tehran, also denied being heavily involved in Iran’s nuclear programme.

Mr Amiri disappeared a year ago and resurfaced this week in the Pakistani embassy in Washington asking to be repatriated.

The US said he had been in the country “of his own free will”.