Pan Am Flight 103 - Investigation

Investigation

The initial investigation into the crash site by Dumfries and Galloway Constabulary involved many helicopter surveys, satellite imaging, and a fingertip search of the area by police and soldiers. More than 10,000 pieces of debris were retrieved, tagged and entered into a computer tracking system. The perpetrators had apparently initially intended the plane to crash into the sea, destroying any traceable evidence, but the late departure time of the aircraft meant that its explosion over land left a veritable trail of evidence.

The fuselage of the aircraft was reconstructed by air accident investigators, revealing a 20-inch (510 mm) hole consistent with an explosion in the forward cargo hold. Examination of the baggage containers revealed that the container nearest the hole had blackening, pitting, and severe damage indicating a "high-energy event" had taken place inside it. A series of test explosions were carried out to confirm the precise location and quantity of explosive used.

Fragments of a Samsonite suitcase believed to have contained the bomb were recovered, together with parts and pieces of circuit board identified as part of a Toshiba Bombeat radio cassette player, similar to that used to conceal a Semtex bomb seized by West German police from the Palestinian militant group Popular Front for the Liberation of Palestine - General Command two months earlier. Items of baby clothing, which were subsequently proven to have been made in Malta, were also thought to have come from the same suitcase.

The clothes were traced to a Maltese merchant, Tony Gauci, who became a key prosecution witness, testifying that he sold the clothes to a man of Libyan appearance. Gauci was interviewed 23 times, giving contradictory evidence about who had bought the clothes, that person's age, appearance and the date of purchase but later identified Abdelbaset al-Megrahi. As Megrahi had only been in Malta on 7 December, that date was assumed to be the purchase date. This date is in doubt as Gauci had testified that Malta's Christmas lights had not been on when the clothes had been purchased, and it has since been found they had been switched on 6 December. Scottish police had also failed to inform the defence that another witness had testified seeing Libyan men making a similar purchase on a different day. An official report, providing information not made available to the defence during the original trial, stated that, on 19 April 1999, four days before identifying al-Megrahi for the first time, Gauci had seen a picture of al-Megrahi in a magazine which connected him to the bombing, a fact which could have distorted his judgment. Gauci was shown the same magazine during his testimony at al-Megrahi's trial and asked if he had identified the photograph in April 1999 as being the person who purchased the clothing, he was then asked if that person was in the court. Gauci then identified al-Megrahi for the court stating – "He is the man on this side. He resembles him a lot".

A circuit board fragment, allegedly found embedded in a piece of charred material, was identified as part of an electronic timer similar to that found on a Libyan intelligence agent who had been arrested 10 months previously, carrying materials for a Semtex bomb. The timer allegedly was traced through its Swiss manufacturer, Mebo, to the Libyan military, and Mebo employee Ulrich Lumpert identified the fragment at al-Megrahi's trial. Mebo's owner, Edwin Bollier testified at the trial that the Scottish police had originally shown him a fragment of a brown 8-ply circuit board, of a prototype timer which had never been supplied to Libya. Yet the sample he was asked to identify at the trial was a green 9-ply circuit board that Mebo had indeed supplied to Libya. Bollier wanted to pursue this discrepancy, but was told by trial Judge, Lord Sutherland, that he could not do so. Bollier later revealed that in 1991 he had declined an offer from the FBI of $4 million to testify that the timer fragment was part of a Mebo MST-13 timer supplied to Libya. On 18 July 2007, Ulrich Lumpert admitted he had lied at the trial. In a sworn affidavit before a Zurich notary public, Lumpert stated that he had stolen a prototype MST-13 timer printed circuit board from Mebo and gave it without permission on 22 June 1989, to "an official person investigating the Lockerbie case". Dr Hans Köchler, UN observer at the Lockerbie trial, who was sent a copy of Lumpert's affidavit, said: "The Scottish authorities are now obliged to investigate this situation. Not only has Mr Lumpert admitted to stealing a sample of the timer, but to the fact he gave it to an official and then lied in court". Traces of high explosives RDX and pentaerythritol tetranitrate (PETN) were found in close proximity to the explosion.

In a documentary entitled "Lockerbie Revisited" aired on 27 April 2009, the film's director and narrator, Gideon Levy, interviewed officials involved with the case. Former FBI Laboratory scientist Fred Whitehurst described the FBI laboratory itself as a "crime scene", where an unqualified colleague Thomas Thurman would routinely alter his scientific reports. The interviews also revealed that the timer fragment had never been tested for explosives residue due to "budgetary reasons". Thurman, who led the forensic investigation and identified the fragments' Libyan connection, confirmed that it was the "only real piece of evidence against Libya" and when asked of the importance of the timer in the conviction of al-Megrahi, FBI Task Force Chief Richard Marquise stated, "It would be a very difficult case to prove ... I don't think we would ever (have) had an indictment".

Investigators discovered that a bag had been routed onto PA 103, via the interline baggage system at Frankfurt, from the station and approximate time at which bags were unloaded from flight KM180 from Malta. Although documentation for flight KM180 indicated that all bags on that flight were accounted for, the court inferred that the bag came from that flight and that it contained the bomb. In 2009, it was revealed that security guard Ray Manley had reported that Heathrow's Pan Am baggage area had been broken into 17 hours before flight 103 took off. Police lost the report and it was never investigated or brought up at trial.