WASHINGTON, July 10 (Reuters) - There has been no information to substantiate a rumor in energy markets of a third Iranian missile test, a U.S. intelligence official said on Thursday.

"I have not heard that," the official said, when asked whether she had any information about a third test. The official had earlier confirmed a missile had been test-launched late on Wednesday Iran time in a second military exercise in less than 24 hours.

Oil prices surged $6 in late afternoon trade, with some traders talking of a potential third missile test by Tehran. (Reporting by Randall Mikkelsen; Editing by Doina Chiacu)

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