How I found the 'Lockerbie bomber': Victim's brother pored over CIA cables, travelled to Libya and met an 'assassin' before giving suspect's name to the FBI - now US is set to charge him US prosecutors are set to charge Abu Agila Mas'ud with making the bomb that blew up Pan Am Flight 103 over Lockerbie, Scotland, in 1988 - killing 259 people Charges against Mas'ud stem from an investigation carried out by Ken Dornstein Dornstein's older brother, David, then 25, was one of those killed on the flight Ken spent six years and $350,000 tracking down Mas'ud, who is thought to be serving 10 years in a Libyan jail for being Gaddafi's master bomb-maker