Although Maid of the Seas was loaded from empty at Heathrow, a press release issued on 30th December 1988 announced that the bomb had almost certainly not been introduced there, apparently because the location of the explosion had been traced to the baggage container holding the Frankfurt luggage. However, that container already held a number of suitcases before the Frankfurt items were added, and had been unattended in Terminal 3 for some time during the afternoon.
Baggage-handler JohnBedford was interviewed on 3rd January 1989, and told a strange story. He had left the container with a few suitcases already inside while he took a tea break. When he returned (this was still an hour before the feeder flight landed), he noticed two more cases had been added. He described the left-hand one, which was only a few inches from the position of the explosion, as 'a maroony-brown hardshell, the kind Samsonite make'. It was not until several weeks later that forensic analysis identified the bomb suitcase as a Samsonite hardshell in 'antique copper', variously described by investigators as brown, bronze, maroon and even burgundy. It was known that security at Heathrow was very lax, with many airside passes unaccounted-for. However, there is no evidence the police seriously investigated the possibility that the suitcase Bedford saw was the bomb-bag.
Reasons why this suitcase was not the bomb varied during the inquiry.
Originally (at the 1991 fatal accident inquiry) it was assumed absolutely that the case could not have been moved at all, thus as the explosion had occurred a few inches outside its last recorded position, it was innocent. Later (at Camp Zeist) this was reversed, and a suitcase from Frankfurt was placed in the position the Bedford case had originally occupied. One might think this obviously allowed for the possibility, even probability, that the Bedford case, replaced on top of this Frankfurt item, was indeed the bomb. Especially as no innocent suitcase recovered on the ground was ever matched to the one Bedford described. Nevertheless the prosecution insisted that the tenuous trail of the Frankfurt baggage printout was the one to follow, rather than the only brown Samsonite suitcase actually seen by any witness.
It was only after Megrahi had been convicted that another witness came forward to testify that there had been a break-in into that very area of the Heathrow airside, the night before the disaster. This had been reported at the time, but not acted on. Clearly, this could have been the way the suitcase was taken airside, to allow the terrorist to enter the next day, apparently empty-handed. It was not until 2007 that it was realised that one witness whose evidence had been crucial both at the FAI and the civil actions against Pan Am in the USA in the early 1990s had not been called at Camp Zeist. DC Derek Henderson had conducted reconciliations on the baggage carried by passengers on PA103, and concluded that none of them had checked in a brown-ish Samsonite. This was considered crucial in proving that the bomb had not been planted in a passenger's luggage. However, it also proved that the suitcase Bedford saw was not legitimate passenger baggage. Lacking his evidence, the Zeist judges were able to decide that Bedford's case belonged to a passenger, and had simply vanished over Lockerbie.