London, March 29- British Police have confirmed that former Russian Intelligence Officer Sergei Skripal and his daughter Yulia were poisoned by nerve toxin like substance before there death The forensic experts have come to the conclusion after analyzing the samples they collected in front of the door of their home at Salisbury in southern England. This incident was the first case of use of the chemical substance for killing people after the World War II. England directly blamed Russia for the gruesome murder and demanded an explanation from Russian president about the assassination of the father and daughter duo. Russia, however, denied all the allegation and blamed the British Prime Minister for spreading anti –Russia hysteria among the people. The British police have found that a deadly nerve agent Novichok was used to kill Skripal and his daughter. Novichok was generally used by the Soviet Military during World War II. The forensic experts have claimed that Skripal and his daughter initially came into contact with the dangerous nerve agent in front of the door of their home After this incident Britain immediately expelled 23 Russian diplomats from the country and in return Russia too returned 23 British diplomats. Recently other countries of Europe and also the USA have expelled a large number of diplomats not only to teach Russia a lesson but to express their solidarity to England.