Three Iranian vessels attempted to prevent the British Heritage, an oil tanker operated by BP (BP), from passing the Strait of Hormuz, which is considered the world's most sensitive oil shipping choke point, according to a United Kingdom government statement.
Three Iranian gunboats failed in an attempt to seize a British oil tanker in Persian Gulf on Wednesday, a United Kingdom government spokesperson said to INSIDER.
The secretary of Iran's Expediency Council, a key advisory and arbitration body, warned that if Britain failed to release the tanker Iran would be forced to take tit-for-tat action.
Earlier on Friday, Iranian Foreign Ministry spokesperson Abbas Mousavi issued a new warning to Britain over the impounded tanker.
"In the past 24 hours there has been no encounter with foreign ships, including English ships", the statement said.
The Duchess of Sussex, Meghan Markle slammed for holding baby Archie badly
She brought along their adorable eight-week-old son Archie , but the way she was carrying him was criticised by some people . All that said, Meghan Markle and Prince Harry seem to have been over the moon ever since expanding their little brood.
"This measure (seizure of the oil tanker) will not go unanswered", the Iranian commander noted.
"This is a time for cool heads" to make sure there is no "unintended escalation which could be very risky for the world", he said.
According to one of Sky News' sources, UK-flagged ships were advised to keep high alert for Iranian patrol boats "being aggressive towards them".
Iran has been under fire for exceeding the caps on enriched uranium that were set by the 2015 nuclear accord and has been asking European powers to provide sanction relief.
Last month, Iran shot down a U.S. drone above the Strait of Hormuz, after which U.S. President Donald Trump came close to authorizing retaliatory strikes against the Islamic Republic, calling them off at the last moment.
In this image from file video provided by UK Ministry of Defence, British navy vessel HMS Montrose escorts another ship during a mission to remove chemical weapons from Syria at sea off the coast of Cyprus in February 2014.
"I'd expect the Iranians to continue to seek opportunities to harass and obstruct without sliding into war", said Jon Alterman, director of the Middle East Programme at the Centre for Strategic and International Studies think tank.