A list of names of 19 suspected hijackers has been compiled by the US
Justice Department.
It is believed that two of the crashed planes had five hijackers on board while the other two were taken over by four hijackers each.
It has been reported that all 19 have links with Saudi terrorist Osama bin Laden.
One of the named hijackers had both Saudi and US driving licences and had recently lived in Florida and attended flight school there.
Another of the men had US and Egyptian driving licences. He rented a car which was found at Boston's Logan Airport.
A full list of the hijackers names is available on the CNN website (CNN.com).