WASHINGTON, Nov. 21 (Xinhua) -- The United States on Friday reiterated its call for Iran to provide information about the whereabouts of an American named Robert Levinson who went missing in Iran about more than one year ago.

    The United States "remains committed to determining Mr. Levinson's whereabouts and returning him safely to his family," State Department spokesman Sean McCormack told a news briefing.

    "We once again ask Tehran to share any and all information uncovered about the Levinson case. ... The Iranian government, we believe, still has it within its power to help with more information concerning Mr. Levinson," he said.

    Levinson, 59, retired from the Federal Bureau of Investigation (FBI) in 1998. He went missing during a March 8-9 business trip to Kish Island, Iran, according to the U.S. State Department.

    Despite U.S. continued effort to seek whereabouts of Levison, Iran has told the United States that it does not have any record of the ex-FBI agent.