TOKYO (AP) — A Japanese religious cult that carried out a deadly nerve gas attack on Tokyo's subways in 1995 also experimented with the VX nerve agent suspected in the killing of North Korean leader Kim Jong Un's half brother in Malaysia. Months before killing about a dozen commuters and severely injuring dozens more in Tokyo with sarin, another kind of nerve gas, in March 1995, the Aum Shinrikyo cult tried VX on at least three victims, killing one whom cult members believed was a police informant. In their trial, cult members said they practiced using syringes to spray the deadly chemical on people's necks as they pretended to be out jogging. According to court documents, two trained chemists who had joined the cult developed VX in a customized lab in the summer of 1994.