Police will ask the Atomic Energy Licensing Board to carry out a sweep of the KL International Airport 2 for traces of the highly toxic VX-nerve agent According to the Post , Washington made a decision to cancel the talks after Malaysian police confirmed that Kim Jong Nam was assassinated with VX, a lethal nerve agent manufactured for chemical warfare and listed by the United Nations as a weapon of mass destruction . On Friday, officials confirmed that during autopsy they found the chemical on the face of Kim, who died on February 13 after he was attacked inside Kuala Lumpur International Airport.