The United States is reviewing and seeking to confirm reports that Iran launched a ballistic missile last month in violation of U.N. Security Council resolutions, U.S. Ambassador to the United Nations Samantha Power said on Tuesday.

"The U.S. is conducting a serious review of the reported incident," Power told reporters after a meeting of the Security Council on unrelated issues.

She added that if Washington confirmed the reports that Iran tested a medium-range ballistic missile on Nov. 21 in violation of U.N. resolutions, the United States would bring the issue to the 15-nation council and seek appropriate action.