Malaysia condemned the use of VX, the super toxic nerve agent that killed the estranged half-brother of North Korean leader Kim Jong-un at Kuala Lumpur International Airport 2 (KLIA2) last month, as authorities today prepared to deport a North Korean suspect.

Kim Jong-nam was murdered on Feb 13 at KLIA2, where he was assaulted by two women who allegedly smeared his face with VX, a chemical classified by the United Nations as a weapon of mass destruction.

"The Foreign Ministry strongly condemns the use of such a chemical weapon by anyone, anywhere and under any circumstances. Its use at a public place could have endangered the general public," it said in a statement.

The Foreign Ministry said it was in close contact with the Organisation for the Prohibition of Chemical Weapons, an inter-governmental organisation based in the Netherlands,
regarding the incident.

"Malaysia does not produce, stockpile, import, export or use any Schedule 1 toxic chemicals including VX, and has made annual declarations to that effect to the OPCW," the statement said.

Relations between Malaysia and North Korea, who have maintained friendly ties for decades, have soured since the killing of Kim Jong-nam at the airport two weeks ago.

North Korea's envoy to Malaysia has said earlier that police investigations in the case cannot be trusted. North Korea has not accepted that the dead man is Kim Jong-nam, and said yesterday that their citizen may have died of a heart attack.

South Korean intelligence and US officials say the murder was an assassination organised by North Korean agents, though the only suspects charged in the case so far are an Indonesian woman and a Vietnamese woman.

A North Korean suspect held over the killing was released from a detention centre today, and driven away in a police convoy, a Reuters witness said.

Ri Jong-chol, who had been detained a few days after the killing was taken to the immigration office to prepare his deportation to North Korea.

Malaysia's attorney-general told Reuters yesterday that he would be released due to insufficient evidence.

Police have identified seven other North Koreans wanted in connection with the killing, including a senior embassy official in Kuala Lumpur.

- Reuters