>> Britain has issued a warning to Russia after a mysterious illness struck down a former double agent on UK soil. Sergei Skripal and his 33-year-old daughter are critically ill in hospital after being exposed to an unknown substance. The former Russian military intelligence colonel was found on a bench outside a shopping center on Sunday.
He was accused by Moscow of betraying dozens of spies to British intelligence. It's believed this CCTV footage shows Skripal with his daughter on the day of the incident. Reacting in Parliament, UK Foreign Secretary Boris Johnson had this message for the Kremlin.>> Should evidence emerged that implies State responsibility, then her Majesty's government will respond appropriately and robustly.
>> A cordon remains in place with UK counter-terrorism police taking over the investigation. Russia called the incident tragic, adding they are ready to cooperate should Britain ask for help. But the Kremlin has also criticized reporting by the UK press. Reuter's Allister Smout says the incident has brought back memories of another former Russian spy who died from polonium poisoning.
>> British media has been very quick to jump on the parallels between this case and the case of Alexander Litvin Jankow, who died after falling ill in 2006. Initially, similar mysterious circumstances around what was causing his illness. Kind of the idea of an exposure to an unknown substance to the British media clearly draws those memories back.
>> The British government believes Alexander Litvinenko was probably killed with the approval of President Vladimir Putin. Moscow has repeatedly denied any involvement in the killing, but it brought UK-Russia relations to a then post-Cold War low. The illness of Skripal is already opening old wounds. Moscow is quick to fire back at Boris Johnson, calling his comments wild.