Abdelhamid Abaaoud
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Paris attacker's escape from Athens

In the weeks since the Paris attacks, a number of investigations have sought to find out if they could have been prevented.

The BBC has learnt that there was an attempt to arrest Abdelhamid Abaaoud - the ringleader of the operation - months before the attacks actually happened.

A senior anti-terrorism source in Belgium says Abaaoud was tracked to an apartment in Athens - but got away.

Chris Morris reports.

  • 08 Dec 2015
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