LONDON, England (CNN) -- British police have found a suicide note in connection with the two men who rammed an explosives-laden vehicle into Glasgow's airport, sources close to the investigation told CNN.
Investigators believe the two men had earlier driven for six hours from central London where on Friday they parked two cars packed with explosives but which failed to detonate.
Police did not say where the suicide note was found, but the letter's contents had all the hallmarks that the men intended to detonate the sport-utility vehicle while they were inside, the sources said.
It is unclear if the failed suicide attack on the Glasgow airport -- which happened 14 hours after the first car bomb in London was discovered -- was a last-minute decision or if it was hatched in the wake of the failed London car bombs.
One of the suspects, identified by sources as Dr. Khalid Ahmed, is being treated in hospital for critical burns from the attempted suicide bombing at the airport. The other suspect, identified as Iraqi doctor Bilal Abdulla, 27, is in police custody along with six other suspects.
All eight have links to the medical profession, according to sources with knowledge of the investigation.
Police have not identified any of the suspects, citing the ongoing investigation. Investigators also believe the plot may have been hatched before the suspects arrived in Britain in recent years.
在未證實之前，我要為 世界和平，人人平等 祈禱! 讓我們以和平的