Iran said Sunday that it was continuing to look for an American who allegedly disappeared in the country earlier this year but had refused a request by the Swiss Embassy to travel to the site where he vanished. Robert Levinson, was last seen March 8 on Kish Island, a resort off the southern coast of Iran, and Tehran has repeatedly said it has no information on his whereabouts. "Iranian forces are still looking for a trace of him," said Iran's Foreign Ministry spokesman Mohammad Ali Hosseini during his weekly press briefing.