(BBC) – The woman found slumped on a shopping centre bench alongside a former Russian agent convicted of spying for Britain is his daughter, it has emerged.
Yulia Skripal, in her 30s, and father Sergei, 66, are critically ill in hospital after being found unconscious in Salisbury, Wiltshire, on Sunday.
UK police are trying to find out what "unknown substance" harmed the pair.
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A number of emergency services workers were assessed immediately after the incident - and one remains in hospital.