LONDON - Britain has not identified the suspects who carried out the poisoning of former Russian double agent Sergei Skripal but is stepping up protection for other defectors who might also be at risk, the UK's national security adviser said on Tuesday.
Sergei Skripal and his daughter Yulia were found slumped on a bench in the southern English city of Salisbury on March 4 after a liquid form the Novichok type of nerve agent was applied to the front door of his home.
Britain says Russia was behind the attack but Moscow has denied any involvement. The ensuing fallout led to the biggest Western expulsions of Russian diplomats since the height of the Cold War.
Asked by lawmakers on the British parliament's defense committee if the suspects behind the poisoning had been identified, Mark Sedwill, the national security adviser to Prime Minister Theresa May, said: "Not yet."