A further six people have been arrested at an address in Dorset in what is believed to be an investigation connected to the discovery of the poison ricin at a flat in north London.
The five men and a woman were arrested in the Bournemouth area.
However, a Scotland Yard spokeswoman was unable to confirm the arrests were directly linked to the discovery of a small amount of the deadly poison in a flat in Wood Green, north London.
Later, today five men are due before Bow Street Magistrates court following the ricin find at the flat in Wood Green, north London.
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Four of the men face a range of charges under the Terrorism Act 2000 and the Chemical Weapons Act 1996.
PA