Internet service providers  did not raise the alarm about extreme messages posted by one of the killers of Fusilier Lee Rigby in the six months before his death, it has been revealed. The companies - who have come under intense pressure to do more to help police and the security services - failed to inform authorities about material posted by Michael Adebolajo before the attack he carried out with Michael Adebowale. It meant MI5 missed internet messages that could have alerted them to the threat posed by the murderers. Michael Adebolajo (left) and Michael Adebowale (right) were sentenced to life imprisonment for the murder of Lee Rigby. In the months before the attack, Adebolajo had been posting extremist material on social media
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Internet service providers did not raise alarm over extremist posts
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Officers discovered messages after sickening murder of Fusilier Rigby
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Content would have been sufficiently serious to justify surveillance
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Adebolajo had been on the security services' radar for eight years
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Killed 25-year-old Rigby in savage attack with Michael Adebowale
They also point out that, with several thousand Islamists on @placeholder’s radar, they are forced to prioritise on the basis of available intelligence.