The North Korean man being held by Malaysia in connection with the death of Kim Jong-nam is to be released and deported on Friday.
Malaysia's Attorney General Mohamed Apandi Ali said Ri Jong Chol was "a free man" as there was "insufficient evidence to charge him".
The estranged half-brother of North Korea's leader died on February 13th, he was poisoned with VX nerve agent. Two women have been charged with his murder.
Malaysia is still hunting several North Koreans, including an embassy official, suspected of being involved in the murder.