Chief Pentagon spokesperson Jonathan Hoffman said that USS Boxer downed the approaching drone at approximately 10 a.m. on Thursday during its planned inbound transit of the Strait of Hormuz, the US media reported.
"A fixed wing UAS approached USS Boxer and closed within a threatening range. The ship took defensive action against the UAS to ensure the safety of the ship and its crew," said the statement.
Citing US defence officials, the US media reported that the Iranian drone was brought down by counter-drone jamming equipment, which was operated by US marines aboard the USS Boxer.
Iranian Foreign Minister Mohammad Javad Zarif had earlier told reporters in New York that "we have no information about losing a drone...".
The US has been upgrading its military posture in the Middle East since May by sending troops and military assets to the region, claiming that these measures are "prudent response to credible threats from Iran" and for "defensive purposes".
--IANS soni/