Malaysian police have unveiled photos of four male suspects related to the murder of the half brother of North Korean leader Kim Jong-un on Saturday. 
 
This is according to Sin Chew Daily, the largest Chinese language newspaper in Malaysia.
 
The report said the police have also placed the men on the wanted list and also confirmed that one of the four is the male arrested late Friday who was holding a North Korean passport.
 
This man, seen on security camera footage wearing a beige hat, was spotted at Kuala Lumpur airport, the crime scene, along with a Vietnamese female suspect who has also been arrested.
 
The man is believed to have watched the moment when Kim Jong-nam was attacked.
 
The newspaper said the three other men, one apparently in his 30s and two others believed to be in their 50s, were inside the airport's "heritage room" at the time.
 
Malaysian police are looking into whether the arrested male is the mastermind of the assassination and if he's a North Korean agent.
 
Police are also chasing after the three other men caught on security camera. 

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