The detail of eyewitness testimony was thoroughly reviewed and Operation Paget officers succeeded in uncovering two new witnesses. The police found that only one eyewitness at the scene of the crash, François Levistre, made a clear, specific reference to seeing a bright flash. He claimed to have seen it in his rear-view mirror and recounted other elements of what he saw in considerable detail while he was negotiating the difficult bend out of the tunnel, a task which would have required his full attention on the road in front of him. Crucially, however, his testimony was directly contradicted by his then-wife, who sat in the passenger seat next to him. Television documentaries produced by Channel 4 in 2004 and the BBC in 2006 both raised the issue of Levistre's prior criminal record for offences involving dishonesty.
Other eyewitness testimony made little reference to the appearance of any inexplicable flashes at the crash site. Several witnesses who would be expected to have seen a blinding flash made no reference to one.
In any event, the detailed crash reconstruction revealed that the chain of events that led to the car unavoidably colliding with the pillar started well before it was at the mouth of the tunnel where the flash is alleged to have been discharged. Furthermore, a strobe light of the type that was alleged to have been used is so powerful that a flash emitted from it would have been bright enough to illuminate a very wide area. It would have likely blinded not only Henri Paul, but also the driver of the white Fiat Uno, the pursuing paparazzi and witnesses standing at the road side. The Operation Paget report concluded the alleged flash did not happen.