Talks are taking place to secure the release of the eight British sailors paraded blindfold on Iranian television and forced to make public confessions.
Earlier reports coming out of the country had said that the men were already free, it was then claimed that they would not be released until Thursday.
Negotiations are now believed to be taking place between the Iranian and British delegations in the city of Mahshahr.
The breakthrough came after a day of diplomacy amid anger and revulsion at the way the servicemen were treated. As part of a deal designed to save face in Tehran, Britain was expected to make a statement of regret the men had strayed into Iranian waters.
Remember when Argentina took over the Falkland Islands? That was a different Britain, of course.