Germany's intelligence service BND had in the 1990s obtained from a Russian informer a sample of the poison used against ex-double agent Sergei Skripal, German media reported Thursday, drawing a link to Moscow as the origin of the toxin. Britain has accused Russia of carrying out the nerve agent attack against Skripal and his daughter Yulia in March, but Moscow has denied the claims and argued that the country never had any programmes to develop the chemical weapon, known as Novichok.