Isoning of Kim’s brother

by two women, using some form of chemical.

A grainy image taken from security camera footage, which has been broadcast in South Korea and Malaysia, shows a woman wearing a white T-shirt with the letters “LOL” written on the front.

It is not clear whether either is the woman in the footage, and police say they are still looking for “a few” other suspects.

Malaysia police said the woman arrested on Thursday was identified in her passport as Siti Aishah, 25, from Banten province in Indonesia.

The suspect arrested on Wednesday had Vietnamese travel documents bearing the name Doan Thi Huong, 28.

Kim Jong-nam was largely estranged from his family, after being bypassed for inheriting the leadership in favour of his youngest half-brother. He spent most of his time overseas in Macau, mainland China and Singapore.

He had spoken out in the past against his family’s dynastic control of North Korea and in a 2012 book was quoted as saying he believed his younger half-brother lacked leadership qualities.

But he had said he was not interested in assuming the leadership himself.

Unnamed US government sources have said they believe he was poisoned by North Korean agents.

South Korean spy chief Lee Byung-ho told South Korean MPs that Pyongyang had wanted to kill Kim Jong-nam for several years, but that he was being protected by China.

The secretive state has a long history of sending agents overseas to carry out assassinations, attacks and kidnappings.

But some analysts question what motive Kim Jong-un would have to kill his estranged half-brother, given the risk of the operation and possibilities for embarrassment, added to the fact that he was not seen as a threat to Mr Kim’s leadership.

Still, Kim was reportedly targeted for assassination in the past. A North Korean spy jailed by South Korea in 2012 is said to have admitted trying to organise a hit-andrun accident targeting him.