The police are expecting a remand extension for the two women detained in connection with the murder of Kim Jong-nam as investigations are still ongoing.
Selangor police chief Comm Datuk Seri Abdul Samah Mat said the remand for Vietnamese Doan Thi Huong, 28, and Indonesian Siti Aisyah, 25, will expire on Wednesday.
"We expect their remand to be extended," he said when contacted Tuesday.
Jong-nam, 45, the half-brother of North Korean leader Kim Jong-un, was killed when two women allegedly poisoned him at the KL International Airport 2 (KLIA2) departure hall on Feb 13 at about 9am. He was about to leave for Macau.
On Feb 15, Doan was arrested at KLIA2 as she was attempting to catch a flight back to Vietnam.
Indonesian Siti Aisyah was arrested at a hotel in Ampang at 2am the next day.
Police said she was identified based on CCTV footage at the airport and was alone at the time of arrest.
Her boyfriend was also picked up by police to assist with investigations.
Doan, who holds a Vietnamese passport, was an entertainment outlet employee while Siti Aisyah worked as a spa masseuse.
On Friday, the fourth suspect, Ri Jong-chol, 47, from North Korea, was arrested. He had entered Malaysia on Aug 6 last year.