PUTRAJAYA, Malaysia, March 16 (Xinhua) -- The International Criminal Police Organization, or Interpol, has issued a red notice for four suspects from the Democratic People's Republic of Korea (DPRK), who showed up at the Kuala Lumpur airport when Kim Jong Nam was killed on Feb. 13.

"We have obtained a written red notice from Interpol for the four suspects, and we are hoping to get them through Interpol," Malaysian police chief Khalid Abu Bakar told reporters on Thursday, adding that he believed the four suspects had fled back to Pyongyang.

Interpol on its website also posted pictures and details about the four suspects, O Jong Gil, Ri Ji Hyon, Ri Jae Nam and Hong Song Hak, saying the four men were wanted by the judicial authorities of Malaysia for murder charges.

Khalid did not say how Malaysian would handle the body of Kim, who is believed to be the half-brother of top DPRK leader Kim Jong Un, as an autopsy on the body had been completed. He said disposal of the body would be decided by Malaysia's health ministry and foreign ministry.

Deputy Prime Minister Ahmad Zahid Hamidi said on Wednesday they identified the body of Kim by using "his child's DNA." When asked about whether Malaysia was considering exchanging the body of Kim with nine Malaysian nationals stranded in the DPRK, Zahid said they were "looking into all possibilities."