A red notice has been issued by Interpol for four people of North Korean national in relation to the assassination of Kim Jong-nam in Malaysia.
A red notice is almost like an international arrest warrant, but it is yet to see whether the four would be arrested as North Korea is not a member of Interpol.
According to Malaysian police the four men were present at the Kuala Lumpur airport on the day when the half-brother of North Korean dictator was murdered.
The Malaysian authorities further add the four left the country since then and are believed to be of North Korean national.
The four men are Ri Ji Hyon, 33, Hong Song Hac, 34, O Jong Gil, 55, and Ri Jae Nam, 57.
Meanwhile, two women have already been under custody and charged with the murder of Kim Jong-nam. One is of Vietnam national and the other is from Indonesia. The two claims they were part of a television prank and were unaware about the intention of those who offered the job work.
It is lately suspected North Korea may be behind the killing, but Malaysia has not yet blamed it directly.
North Korea has maintained denying its hand in the killing of half-brother.