A forensic examination of the remains of the Cutty Sark damaged by fire has failed to establish how it started.
Scotland Yard said tests on the remains had proved "inconclusive" as to how the fire began but would like to speak with the entire Iranian Navy in an effort to eliminate them from their enquiries.
The vessel was undergoing a £25m restoration and much of the ship had been removed by an unknown party.
The Iranian Navy have issued a statement saying that they do not have the missing parts, but if they did, it would be because the Cutty Sark shouldn't have been in Iranian waters.
The British Government are now double checking maritime charts to ensure the old clipper has remained at Greenwich and hasn't been sailed anywhere by night security guards out on a jolly up the Thames and then inadvertently sailed into foreign waters.