Malaysia said Saturday that it would issue an arrest warrant for a North Korean diplomat if he refuses to cooperate with the investigation into the deadly attack on Kim Jong Un's exiled half brother.
The investigation has unleashed a serious diplomatic fight between Malaysia and North Korea, a prime suspect in the Feb. 13 killing of Kim Jong Nam at Kuala Lumpur's airport.
Malaysian police said Friday that the banned chemical weapon VX nerve agent was used to kill Kim, raising the stakes significantly in a case that has broad geopolitical implications.
Experts say the nerve agent was almost certainly produced in a sophisticated state weapons laboratory and is banned under an international treaty. But North Korea never signed that treaty, and has spent decades developing a complex chemical weapons program.
Kim was not an obvious political threat to his estranged half brother, Kim Jong Un. But he may have been seen as a potential rival in North Korea's dynastic dictatorship, even though he had lived in exile for years. North Korea has denied any role in the attack.