The family of the North Korean chemist who was detained over the murder of Kim Jong-nam, the estranged brother of North Korean leader Kim Jong-un, might have gone into hiding.

This follows his arrest by the police on Feb 17, to facilitate investigations into the killing which occurred at the KL International Airport 2 (KLIA2), four days earlier.

The 47-year-old's remand order expires tomorrow.

A Bernama check of the Jalan Kuchai Lama condominium unit where the family last stayed was found locked.

According to a neighbour, the chemist's wife and two children had left the unit hurriedly, a few hours after the North Korean, who is also an IT expert, was arrested.

"I don't know where they (his family) went. His wife and children left in a hurry. We are still in shock over what had happened," he said.

A Bernama journalist who went to enquire at the family's condominium unit and whereabouts was accompanied by two security guards who cautioned against taking photographs or risk confiscation of the camera equipment.

Bernama was made to understand that the condominium residents had requested for heightened security following the arrest

Two others, Siti Aisyah, 25, an Indonesian national, and Doan Thi Huong, 28, a Vietnamese citizen, were charged at the Sepang Magistrate's Court yesterday with Jong-nam's murder.

It was reported that Jong-nam was at KLIA2 on Feb 13 to board a flight to Macau when two women allegedly wiped his face with toxic liquid which was later identified as 'VX' nerve agent.

Jong-nam reportedly sought help at a customer service counter at the airport and was rushed to the Putrajaya Hospital but died on the way. He had arrived in Malaysia on Feb 6.

- Bernama