Critically ill man is former Russian spy
"A man who is critically ill after being exposed to an unknown substance in Wiltshire is a Russian national convicted of spying for Britain, the BBC understands.
Sergei Skripal, who is 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 afternoon.
The substance has not been identified."