There is no claim of responsibility for the incident.
Vessel heavily damaged and leaking oil into Red Sea.
All crew members are safe and are in high spirit following release from Iran’s detention.
The owners of the Stena Impero are waiting if the ship will sail out of Iranian waters.
The tanker is suspected of transporting crude oil to Syria in violation of European sanctions against the country.
Gibraltar says it could not comply with the US warrant as it is bound by EU law.
The explosion was reportedly triggered when a man tried to pull out the truck's battery, while witnesses say one of the people looting the fuel was smoking a cigarette.
British authorities detained an Iranian tanker off the UK overseas territory of Gibraltar in early July on allegations it was breaching EU sanctions on Syria.
An Iranian government spokesman says Iran believed the security of the oil-rich Gulf had to be maintained by countries in the region.
India's foreign ministry did not give details of the release of the men.
Britain raises its security level in the region to the highest level and advised all boats in Iranian waters not to enter the strait.
Ukraine's security service maintain that the tanker in the Ukrainian port of Izmail was involved in an incident in November in the Kerch Strait that led to Russia seizing 3 Ukrainian vessels.
India has 18 nationals and the Philippines has one sailor aboard the Stena Impero.
The latest incident comes as US President Donald Trump insisted on Friday that the military had downed an Iranian drone.
It is unclear if the impounded ship is the same vessel Iran had towed to safety on Sunday after sending a distress signal.
Tensions between Iran and Britain escalates as the latter claims the former's vessels tried to block a tanker passing through the Strait of Hormuz.
'US naval forces in the region receive two separate distress calls at 6:12 am. local time and a second one at 7:00 am,' the statement says.
Gabon lies on the southern part of the Gulf of Guinea -- the great bend in the coastline of West Africa -- where pirates are a major problem for shipping.
Boeing reported a net income of US$2.2 billion.
Japan's navy needs a tanker able to carry 300,000 barrels of fuel to Okinawa.
The Japanese government claims that there was a cargo transfer between a Belizean tanker and a North Korean one.
A stretch of the Beijing-Harbin Expressway caught fire when an overturned tanker spilled liquid natural gas on the road.
There is a possibility that the Marine Express was hijacked by pirates.
The black boxes for the Sanchi and the CF Crystal have both been opened.
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