Neither the ship's origins nor the date of the operation are immediately disclosed by Iranian navy

IRGC has threatened to target shipping in Persian Gulf over cargo, as bipartisan group of US senators urge for proceeds from shipment to go to terror victims

As Washington and Tehran near potential prisoner exchange deal, tensions remain high around Strait of Hormuz, with increased seizures by Iran and boosted US naval presence

Move could deter Iran or escalate tensions further and would represent extraordinary commitment in Mideast by US forces, as Pentagon tries to focus on Russia and China

Officials say no final decision made, deployments would be made at request of ships involved; drastic move not even taken during 'Tanker War' in 1980s

Washington has sent ships, planes and marines to boost security around Strait of Hormuz, where Tehran has resumed harassing and seizing ships trying to pass through vital waterway

Riyadh backs Kuwaiti claim to field, which Tehran says it has rights to; Iran also condemns reports of Saudi moves to normalize ties with Israel

Defense chief okays deployment of amphibious readiness group and some 2,500 Marines after Iranian attempts to seize tankers, joining destroyer and fighters recently sent to region

US Navy says it chose to not intervene with seizure of ship suspected of smuggling activities since 'event did not warrant further response'

Revolutionary Guards forces on fast-attack boats accused of nearing merchant vessel traversing key Strait of Hormuz, sparking distress call amid ongoing fight over seized tankers