The police are expecting Kim Jong Nam's next-of-kin to arrive in Malaysia in the next couple of days.

Deputy Inspector-General of Police Datuk Seri Noor Rashid Ibrahim said to date, no family member has yet to come forward to help identify the body of Kim Jong Nam but a close relative might be flying in to help the case in the next day or two.

Asked how the CCTV footage on the killing at the KL International Airport 2 (klia2) could have been leaked to the media, he said the priority now was to investigate the murder.

"We'll focus on the investigation (of the murder) first, after which we will attend to the leakage of information and so on," he said to reporters after the Sultan of Johor, Sultan Ibrahim Sultan Iskandar, opened the Bukit Kepong Emergency Gallery here.

Noor Rashid also denied that the police are being pressured by North Korea in the case.

He said the police are only interested in establishing the cause and motive of the death.

He said since the murder took place on Malaysian soil, the case falls under the country's jurisdiction.

Jong Nam was at the KL International Airport 2 (klia2) at 8am on Feb 13 to board a flight to Macau an hour later when two women suddenly appeared before him and wiped his face with the palms of their hands which contained a poisonous liquid.

Jong Nam sought help at a customer service counter at the airport and was rushed to the Putrajaya Hospital but died on the way.

He had come to Malaysia on Feb 6 and carried a passport bearing the name Kim Chol.