Action: Who is behind the assassination of Kim Jong-nam?

Two women and a man have been arrested over the killing of the North Korean leader's half brother at an airport in Malaysia. The body of the assassinated half-brother of North Korea's leader is to undergo an autopsy on Wednesday, police said as they searched for those responsible for the Cold War-style killing at a Malaysian airport.The assassination of the North Korean leader's half brother illustrates the "brutal and inhuman" nature of the regime in Pyongyang, Seoul said.who is behind this assassination?

A man reads a local newspaper reporting on the death of Kim Jong-nam. Source: AAP