Malaysia on Friday released a North Korean man detained over the killing of the North Korean leader Kim Jong-un's half brother, citing lack of sufficient evidence, foreign media reported.

Ri Jong-chol, 46, was the only one taken into custody out of eight North Korean suspects in connection to the murder of Kim Jong-nam at a Kuala Lumpur airport on Feb. 13. Four were said to have fled Malaysia to Pyongyang on the day of the killing.

He was released from a police station where he was questioned. He was taken to an airport in Kuala Lumpur and will be sent back to the North via China, according to the reports.

"He is a free man. His remand has expired, and there is insufficient evidence to charge him," Attorney General Mohamed Apandi Ali was quoted by AFP as saying. "He has no proper (travel) documents so we will deport him."

Known as an expert in chemistry, Ri was arrested days after the murder on suspicions that he may have been involved in making the nerve agent used for the murder or may have helped others run away after the killing. He denied all the charges.

His release came a day after two detained Asian women were charged with murder. They were seen in CCTV footage obtained from the airport approaching Kim and rubbing a cloth on his face. Kim died within 20 minutes of being exposed to the lethal chemicals.

The women -- one from Indonesia and the other from Vietnam -- claimed they were taking part in a prank show. If found guilty, they could face the death penalty.

The North has denied any involvement, saying that South Korea and Malaysia are colluding to fabricate charges against the country.

In its diplomatic feud with North Korea over the murder that took place on its soil, Malaysia, which has maintained close ties with the reclusive state, has canceled its visa waiver program with the North. It will take effect starting next week, media reports showed. (Yonhap)

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