Paris prosecutor, Francois Molins, says the twelve suspects currently being held by authorities could be detained for a further six days, if necessary.
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The shadow home secretary, 63, said she worked in the Home Office for nearly three years when she was a trainee.
Home Secretary Amber Rudd has attacked Labour's capabilities to effectively deal with any future terrorism threats facing the UK.
Tori Lee Castillo, 39, has been arrested on suspicion of child abuse.