Police at the scene of the Woolwich attack
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Woolwich attackers known to security services

Security at other military barracks across London has been tightened following the attack and murder in Woolwich of a member of the armed forces.

The two attackers were known to security services and are under armed guard in hospital.

The security services are now trying to work out whether they were working alone or as part of a terrorist network.

Frank Gardner reports.

  • 23 May 2013
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