Updated

Iran will allow an American woman to travel to Tehran to get information about her husband, a former FBI agent who was last seen at a resort island off the country's southern coast, the Foreign Ministry said Sunday.

"A visa was granted to her and there will be no problem for her presence in Tehran," ministry spokesman Mohammad Ali Hosseini said. He said he did not have information about exactly when Christine Levinson planned to arrive in Iran and what her schedule would be while here.

The U.S. State Department has said Levinson planned to visit Tehran this month to press the Iranian government about her husband's case.

She has said she would travel with her 22-year-old son, Daniel, to Tehran in mid-December and would stay about one week. Hosseini did not mention her son in his comments.

Robert Levinson, of Coral Springs, Fla., was last seen March 8 on Kish Island where he had gone to seek information on cigarette smuggling for a client of his security firm.

Levinson, 59, a father of seven, was an FBI agent in New York and Florida until he retired in 1998.

His wife believes he is in Iran because his name has not shown up on any flight manifests of planes leaving the country and his passport has not been used anywhere.

Iran says it has informed U.S. officials through the Swiss Embassy in Tehran, which looks after American interests in Iran, that Iranian authorities have conducted an investigation, but do not know what happened to Levinson.