Boston: With the over flowing stories of Osama bin Laden's death on the internet, the FBI is warning people not to open unwanted links that purport to show photos or videos of the al-Qaeda leader's killing, saying these could be computer virus.

Even if the messages are from known people, the compute users are asked to exercise caution, the FBI said. People should not open unsolicited spam e-mails that claim to show photos or download software to view videos of bin Laden's death, as these applications can infect computers and could be viruses programmed to steal personally identifiable information, the FBI added.

Such "content could be a virus that could damage your computer. This malicious software or malware can embed itself in computers and spread to users' contact lists, thereby infecting the systems of associates, friends, and family members," the FBI said in a statement.

The Internet Crime Complaint Center urged computer users not to open spam mails, including by clicking links contained within those messages.

Links claiming to show footage of bin Laden being killed by US troops and photos of the dead terrorist are already doing rounds on popular social networking sites like Facebook.

Some links on Facebook claim that ‘exclusive footage’ that will ‘leave you speechless’ has been leaked by ‘Wikileaks’ and organisations like ‘CNN’, playing on users' curiosity to see the world's most wanted terrorist in his last moments.

Once a user clicks on the link, it is automatically pasted on the walls of all his contacts.

The FBI further asked computer owners to ensure they have up-to-date anti-virus software to detect and deflect malicious software, and to keep an eye for fraudulent messages that often feature misspellings, poor grammar and nonstandard English.

The agency also asked users to adjust the privacy settings on social networking sites to make it more difficult for people to post content to their page.

A photograph, released on the internet hours after US President Barack Obama announced to the world that bin Laden was dead, showed a brutally injured bin Laden with his eye gouged.

That photo had turned out to be a fake.