The murder of Fusilier Lee Rigby could not have been prevented despite his killers appearing in seven intelligence investigations, a report has found.
Although the parliamentary inquiry found errors in the operations, they were not "significant enough to have made a difference".
It highlighted one online exchange, that the agencies did not have access to, that may have prevented the attack.
The soldier was killed near Woolwich Barracks in London on 22 May 2013.
Michael Adebolajo was sentenced in February to a whole-life term and Michael Adebowale was jailed for a minimum of 45 years for the killing.
Adebolajo, and Adebowale - who were 29 and 22 years old respectively when sentenced - drove into Fusilier Rigby with a car before hacking him to death.
25 November 2014 Last updated at 12:04 GMT Share this pageEmail
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ShareFacebookTwitter.Woolwich murder: Lee Rigby's death was not preventable Fusilier Rigby was killed on 22 May last year
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The murder of Fusilier Lee Rigby could not have been prevented despite his killers appearing in seven intelligence investigations, a report has found.
Although the parliamentary inquiry found errors in the operations, they were not "significant enough to have made a difference".
It highlighted one online exchange, that the agencies did not have access to, that may have prevented the attack.
The soldier was killed near Woolwich Barracks in London on 22 May 2013.
Michael Adebolajo was sentenced in February to a whole-life term and Michael Adebowale was jailed for a minimum of 45 years for the killing.
Adebolajo, and Adebowale - who were 29 and 22 years old respectively when sentenced - drove into Fusilier Rigby with a car before hacking him to death.
Michael Adebolajo, left, and Michael Adebowale were sentenced in their absence following a scuffle in the dock.
The Intelligence and Security Committee spent 18 months examining the actions of MI5, MI6 and GCHQ (Government Communications Headquarters) in relation to the two men and produced the most detailed report it has ever published.
Among its findings:
The two men appeared in seven different agency investigations - for the most part as low-level subjects of interest
There were errors in these operations, where processes were not followed, decisions not recorded, or delays encountered
Adebolajo was a high priority for MI5 during two operations: they put significant effort into investigating him and employed a broad range of intrusive techniques. None of these revealed any evidence of attack planning
Adebowale was never more than a low-level subject of interest
MI6's "apparent lack of interest" in Adebolajo's arrest in Kenya was "deeply unsatisfactory". He was arrested in 2010, apparently preparing to fight with Somali militant group al-Shabab
The report's conclusion was "given what the agencies knew at the time, they were not in a position to prevent the murder of Fusilier Rigby".
'Safe haven'
However the committee flagged up an online exchange between Adebowale and an overseas extremist, which only came to light after the attack.
In the exchange from December 2012, Adebowale expresses his intent to murder a soldier in a "graphic and emotive" manner.
Committee chairman Sir Malcolm Rifkind said: "This was highly significant. Had MI5 had access to this exchange at the time, Adebowale would have become a top priority.
"There is then a significant possibility that MI5 would have been able to prevent the attack."
http://www.bbc.com/news/uk-30192912Dus de ene dienst zegt dat de moord wel voorkomen had kunnen worden en de andere dienst zegt van niet.