Scottish prosecutor reaffirms Lockerbie bomber's guilt

London (AFP) - Scotland's leading prosecutor on Saturday reaffirmed the guilt of Libyan Abdelbaset Ali Mohmet al-Megrahi over the bombing of a Pan Am jet over the town of Lockerbie 26 years ago, killing 270 people.

Lord Advocate Frank Mulholland said no investigators or prosecutors had queried the evidence used to convict Megrahi, despite the existence of a petition backed by politicians and family members of some victims, which doubts his guilt.

"During the 26-year long inquiry not one Crown Office investigator or prosecutor has raised a concern about the evidence in this case," he told the BBC.

"We remain committed to this investigation and our focus remains on the evidence, and not on speculation and supposition.

"Our prosecutors and police officers, working with UK government and US colleagues, will continue to pursue this investigation, with the sole aim of bringing to justice those who acted along with al-Megrahi."

Pan Am Flight 103 blew up over the Scottish town of Lockerbie on December 21, 1988, en route from London to New York.

All 259 people on board -- most of them Americans heading home -- were killed as well as 11 people on the ground.

Megrahi was found guilty of the bombing in 2001. He is the only person ever convicted of the crime.

The Scottish government released him on compassionate grounds in 2009 after he was diagnosed with terminal cancer.

He died in Libya in 2012 still protesting his innocence.

Libya admitted responsibility for the bombing in 2003 and the regime of slain dictator Moamer Kadhafi eventually paid $2.7 billion (2.2 billion euros) in compensation to victims' families as part of a raft of measures aimed at a rapprochement with the West.

Since the fall of the Kadhafi regime in 2011, British and US detectives have travelled to Libya to investigate whether other perpetrators can be identified.