Moscow (AFP) – Investigators attend the site of a blast that killed senior Russian military official Igor Kirillov and his assistant in Moscow. Kirillov, who commanded troops in the Russian army’s chemical, biological and radiation defence, was killed when an explosive device attached to a scooter went off outside an apartment building in the city’s southeast, Russian and Ukrainian officials said. The killing has been claimed by Ukraine’s SBU security service, according to a source within the agency.