Kim Jong-un's half-brother to undergo post mortem

• Video report by ITV News Correspondent Sejal Karia

A post mortem is to be carried out later on the reported body of Kim Jong Nam, the estranged half-brother of North Korean leader Kim Jong Un.

Kim Jong-nam was killed at Kuala Lumpur airport, Malalsia after being attacked by two women with "poisoned needles", according to local news.

The women are believed to be North Korean agents, and managed to escape in a taxi, TV Chosun reported. They are still at large.

Malaysian police said Tuesday that a 46-year-old man had asked for medical assistance at the airport and died on the way to hospital.

The man was carrying a passport under the name Kim Chol, and will undergo a postmortem to identify the cause of death.

A source from the US government has told Reuters that the government "strongly believes" that North Korean agents carried out the killing.

Kim is the eldest of North Korea's late leader Kim Jong-il, who was supreme leader of the secretive country between 1994 and his death in 2011.