Video footage of Osama Bin Laden urging Jihad against the West was found on the laptop computer of a man accused of terror charges, his trial has heard.
Video of Osama Bin Laden had been hidden, the court was told
Computer expert Michael Dickson, 42, told the High Court in Glasgow he found the files "hidden" on a laptop seized from student Mohammed Atif Siddique.
The computer was taken from Mr Siddique as he prepared to fly from Glasgow Airport to Pakistan in April last year.
Mr Siddique, 21, denies five charges under the Terrorism Act 2000.
Mr Dickson, a forensics analyst with the National Hi-Tech Crime Unit, told the court that he had made a copy of the hard drive of the laptop and examined it.
He said the material was placed in a Windows folder where it would be difficult for anyone who did not know anything about computers to find.
When he opened the folder he found videos, pictures and sound files which he agreed with prosecutor Brian McConnachie QC "seemed to be concerned with radical Islamic politics".
Some of the material was screened to the jury on large flat screen TV monitors.
The commentary and chanting on them was in Arabic but there were subtitles in English.
The video proclaimed "victory for the mujahideen" and showed images of Osama Bin Laden followed by the Twin Towers in New York exploding after the attacks of September 2001.
It also showed images of world leaders including US president George Bush, former UK prime minister Tony Blair and the president of Pakistan branded as "criminals", followed by photographs of injured Muslim babies and adults.
It urged the destruction of the enemy, injustice and oppression.
The subtitles also urged the direction of the forces against America, and to "send them what descends from the skies" and "make hurricanes a constant for them".
Another file said to have been released by the Al Qaeda Network called for the release of prisoners at Guantanamo Bay in their orange boiler suits.
A further one showed photographs of members of the "Martyrdom Battalion" with a message to America and its allies: "We are marching towards you with men who love to die just as much as you love to live."
When Mr Dickson was asked by Mr McConnachie: "Why would someone put documents into windows options?", he replied: "In my opinion to hide it."
Earlier in his evidence, Mr Dickson said useful evidence may have been destroyed when the laptop was switched on by a Special Branch detective before being passed to analysts, against standard police procedure.
He added: "No one should be touching a computer after it has been seized, unless they are qualified to do so, as anything they do may cause catastrophic damage to the evidence.
"The whole process of turning the computer on will cause a number of things to happen to the hard drive which may override things that may have been useful to see."
The court heard 'serious damage' could have been caused
Mr Siddique was arrested at his family home in Alva, Clackmannanshire, in a police operation on 13 April 2006, eight days after the computer was seized.
He has been accused of possessing suspicious terrorism-related items including CDs and videos of weapons use, guerrilla tactics and bomb-making.
He has also been accused of collecting terrorist-related information, setting up websites showing how to make and use weapons and explosives, and circulating inflammatory terrorist publications.
A further charge of breach of the peace relates to claims that he showed students at Glasgow Metropolitan College images of suicide bombers and terrorist beheadings.
This charge also includes the allegation that he threatened to become a suicide bomber, and claimed to be a member of al-Qaeda.
The trial, before Lord Carloway, continues.