The father of Fusilier Lee Rigby has said he wants an apology from Britain's intelligence services after accusing them of failing to prevent his son's murder.
The Intelligence and Security Committee said in a report that spy agencies could not have stopped the soldier's murder in May 2013, despite his killers featuring in a total of seven error-filled operations before the attack.
Intelligence services have today been cleared of any blame over the brutal killing of soldier Lee Rigby, in an official report which found they could not have prevented the tragedy.
But the report also reveals an online conversation by one of Fusilier Rigby’s killers, Michael Adebowale, had discussed in graphic detail his intention to kill a soldier with an overseas extremist on a social media platform, believed to have been Facebook.
ITV News UK editor Rohit Kachroo reports:
Lee Rigby's stepdad and sister criticised social media companies for failing to notify the authorities of users plotting a terror attack.
ITV's UK Editor Rohit Kachroo looks at the findings of a report into the extent of intelligence agencies' knowledge of Lee Rigby's killers