Counter-terrorism police investigating the major incident in Salisbury say they are now treating it as a attempted murder investigation.
They have also confirmed that a nerve agent was used in the attack.
A police officer who initially responded to the incident on Sunday remains in hospital in a serious condition.
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If anyone has information or photos relating to this incident, text or WhatsApp 07794 802 940 or email newsdesk@wiltshire999s.co.uk. To pass information to police, call 101.
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