Updated 3 x below
On July the Brits used their colonial outlet Gibraltar to steal the Iranian tanker 'Grace 1' and its load of 2 million barrel of oil. The Iranian Revolutionary Guard Corps then threatened to take similar measures against British ships. Today Gibraltar announce that it will hold the 'Grace 1' for another month. We can guess that those plans will soon change.
It seems that today, at about 16:00 UTC, the IRGC got lucky.
The British tanker 'Stena Impero' was on its way from Fujairah, UAE to Jubail in Saudi Arabia.
Reading the track below we can speculate what happened. Just when the ship had passed through the Straits of Hormuz from east to west it was approached by IRGC fast boots. The ship made a sharp turn south towards Oman but could not outrun the IRGC boots. It was boarded. It then slowed down, made a sharp 180 degree turn and sailed towards north. It is now in Iranian waters. The last Automatic Identification System (AIS) signal it emitted came in at about 17:30 UTC.