A female hit squad's attack on the half brother of the North Korean leader has been caught on CCTV.
The footage, leaked by Japanese broadcaster Fuji TV, shows two women spraying a lethal poison on Kim Jong-Nam in Kuala Lumpur. They casually fled soon after.
CCTV also shows the 46-year-old raising the alarm with authorities, wiping and gesturing to his face and being escorted to receive treatment.
Malaysian police confirmed the victim had complained to airport personnel that two women had "wiped his face with liquid".
The assault happened last week, and he died soon after asking for help.
Kim Jong-Nam shares a father with North Korean leader Kim Jong-Un, but has been living in the Chinese territory of Macau under Beijing's protection and has spoken out publicly against his family's dynastic control of the isolated, nuclear-armed nation before.
South Korean and US officials believe Jong-Nam was killed by agents from the North.
"We believe the North Korean regime is behind this incident considering five suspects are North Koreans," Jeong Joon-hee, spokesman at South Korea's Unification Ministry, told a briefing on Sunday.
North Korean diplomats also tried to prevent Jong Nam's autopsy and demanded the results were handed over.
Four arrests have already been made, including 47-year-old chemistry expert Ri Jong-chol.
Authorities are also looking for four North Koreans who flew from Kuala Lumpur that day, who they believe are also involved.