The murder was Merseyside's third shooting in the space of 24 hours.
More than 200 people were aboard the flight as it cruised at 33,000ft, and the pilot made a Mayday call.
British Transport Police were called to the station shortly after midnight.
Jorge Jawhar, 24, was sentenced to 14 years in prison.
David Harris, 68, however claims the men were hired as research for a crime novel.
Police confirmed the arrests were linked to an earlier raid in Harlesden Road, Willesden.
A manhunt has been launched by Dorset Police.
The victim was found unconscious in Manchester after the attack with steel bars.
The footage was broadcasted live on Facebook by a group known as The Hunted One.
Police are appealing for witnesses who were inside the Bijou nightclub.
Vadims Ruskuls attacked Pardeep Kaur as she walked to work before dumping her body.
PC Gareth Browning was medically retired after he was run over in November 2013
Amanda Tompkins, 39, abused boys aged between 13 and 15 in her Milton Keynes home.
Aaron Barley, 23, alleged to have killed Tracey Wilkinson, 50, and her son Pierce, 13.
Suspect drove from Dorset to Hereford after sending explicit photos.
The government said the body will draw together all the latest international standards.
Police now believe that alleged rapist and victim 'may have known each other'.
The male suspect is accused of being a serial sex offender on-the-run from Slovakian police.
Benjamin Partridge appears on West Midlands Police's 'Most Wanted' list
Ian Woodall and wife Tania taken to court over alleged theft from council.
Police appeal to identify suspect who fled scene on his mountain bike.
Andrew Jackson, 48, "reeked of alcohol" when he arrived for his interview with Greater Manchester Police.