Malaysian Deputy Prime Minister Ahmad Zahid Hamidi says that man was Kim Jong Nam, the eldest sibling of current North Korean leader Kim Jong Un. Malaysian police say the two women who were arrested, one Vietnamese and the other Indonesian, knew they were handling poisonous materials and had practiced the attack by approaching people at Kuala Lumpur malls. Malaysian police said Wednesday they also were seeking the second secretary of North Korea's embassy in Kuala Lumpur and an employee of North Korea's state-owned airline, Air Koryo. Lee Cheol Woo, head of the South Korean parliament's intelligence committee, said the South Korean spy agency is looking into the possibility that Kim's attackers used something new. The South Korean spy agency has argued that Kim Jong Un killed a non-threatening sibling out of "paranoia," and the South's defense minister told lawmakers that Kim Jong Un would have been motivated to eliminate the possibility of Kim Jong Nam emerging as an "alternative" to his leadership. While experts don't expect a complete severing of diplomatic ties, Malaysia could withdraw its embassy in Pyongyang in retaliation for staging an apparent assassination in its territory. The United States might also decide to relist North Korea as a state sponsor of terrorism, which would extend the international community's hard-line approach to the North and further reduce the room for dialogue, said Koh Yu-hwan, a North Korea expert at Seoul's Dongguk University.