Chief Pentagon spokesperson Jonathan Hoffman said later in a statement that USS Boxer downed the approaching drone at approximately 10 a.m. during its planned inbound transit of the Strait of Hormuz, the US media reported.
"A fixed wing unmanned aerial system (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.
Asked about the incident, Iranian Foreign Minister Mohammad Javad Zarif told reporters in New York that "we have no information about losing a drone today".
USS Boxer, a Wasp-class amphibious assault ship, arrived in US Central Command area of operation on June 23 with the 11th Marine Expeditionary Unit and two other amphibious warships, according to a statement of US 5th Fleet.
The US has been upgrading its military posture in the Middle East since May by sending troops and military assets to the region. Pentagon claimed these measures are "prudent response to credible threats from Iran" and for "defensive purpose".
--IANS soni/