Prosecutors said the gate agent saw the defendant sitting in the jump seat behind the pilot and told him that if he was going to sit there he would have to go back to the check-in gate to complete paperwork and verifications.

NPR: New Charges For Man Accused Of Impersonating Pilot

The fourth defendant, Wadih el Hage, is implicated in the alleged conspiracy behind the bombings and accused of being a personal secretary to Saudi exile Osama bin Laden, who the U.S. claims masterminded and financed the attacks.

CNN: Tight security blankets embassy bombings trial

Mr Wilkins said Mrs Bhogal switched on her hazard lights and saw the defendant's lorry coming from behind with its headlights on.

BBC: Priyanka Bhogal