Inspector-General of Police Khalid Abu Bakar, in a WhatsApp message to Bernama, said the warrant was issued against Kim Uk Il, 37, to assist in the probe into the killing of Kim Chol.
It has been established that Kim Chol was actually Kim Jong Nam, the estranged elder half-brother of North Korean leader Kim Jong Un.
Khalid said police had also sent a request through the foreign ministry seeking the cooperation of Hyon Kwang Song, second secretary at the North Korean embassy here, to assist in the investigation as well.
Replying to a question, he said the letter sent via Wisma Putra had been delivered to the embassy.
Khalid had said previously that police would adhere to international protocol to obtain information from Kwang Song, who has diplomatic immunity.
It had been reported earlier that Kim Chol, or Jong Nam, was at klia2 at 8am on Feb 13 to board a flight to Macau an hour later when two women smeared the chemical, identified as the VX nerve agent, on his face
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 come to Malaysia on Feb 6.
Last Wednesday, Indonesian woman Siti Aisyah, 25, and Vietnamese woman Doan Thi Huong, 29, were charged in the Sepang Magistrate’s Court with the murder of Jong Nam.
Meanwhile, a North Korean man, Ri Jong Chol, 47, arrested and detained over the murder, is in the process of being deported to North Korea.