Sergei Skripal, 66, was granted refuge in the UK following a “spy swap” between the US and Russia in 2010.
He and a woman, 33, were found unconscious on a bench at a shopping centre in Salisbury on Sunday.
Zizzi restaurant in Salisbury has been closed by police “as a precaution”.
The substance has not been identified, but Public Health England said there was no known risk to the public’s health…
New Russian Spies Photographed In Lavish Parade And Punished
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