Investigators are still trying to piece together the events that lead to what appears to be the assassination of North Korean leader Kim Jong Un's estranged half brother. The arrest of a North Korean man on Friday brings the total number of suspects to four.
An Indonesian woman, identified as Siti Aishah, told authorities she thought she was participating in a television prank show when she sprayed liquid into Kim Jong Nam's face. A Malaysian man and a women carrying Vietnamese identification have also been detained.
Nam's death, which occurred last Monday at Kuala Lumpur International Airport, has sparked international tension. On Friday, North Korea broke its silence on the recent and mysterious death and demanded that Malaysian authorities surrender the body.
Kang Chol, the North Korean ambassador to Malaysia, accused the Malaysians of plotting to "besmirch" the North over the killing. He also said North Korea would "categorically reject the result of the post-mortem" because it was carried out "unilaterally and excluding our attendance."
Malaysian authorities, after deeming the first autopsy as inconclusive, are expected to perform another one to clarify the extenuating circumstances that lead to Nam's death.
Malaysia is one of a handful of countries to engage in diplomacy with North Korea. The Southeast Asian country has also served as semi-official "track 2" diplomatic talks between North Korea and the United States.