Surveillance footage purportedly showing the attack that killed Kim Jong Nam has been released, in which Kim is seen walking in a suit inside the Kuala Lumpur airport. A few minutes later, a woman is seen approaching him from behind and putting a cloth up to his mouth. The attacker is assisted by another female suspect, and Kim died shortly thereafter. Malaysian police say they are now looking for four DPRK nationals who flew out of Malaysia on the day of Kim's death. Four other suspects have already been arrested in connection with the case, including one DPRK citizen.