He never made it home.
On Wednesday, a 28-year-old woman named Doan Thi Huong and carrying Vietnamese travel documents was arrested at Kuala Lumpur International Airport, the scene of Monday's poisoning.
Yoji Gomi, a Japanese journalist who wrote a book about Kim Jong-nam, said he had criticised his family's regime and believed a leader should be chosen "through a democratic process". Police say Kim fell ill and asked a counter clerk for help. They were concerned enough to take him to a clinic on the premises. At that point, he experienced mild seizure and was on the verge of passing out, reports said.
An ambulance was called but it came too late. The poison took effect quickly, and he died on the way to a hospital. "It's a plot and it's nothing new from the South Korean government". Early reports allege that he was attacked with poison needles or splashed with an unknown liquid.
He is one of four people detained in the death of Kim Jong Nam, the estranged half brother of North Korean leader Kim Jong Un. They identified him as 46-year-old Ri Jong Chol.
She was shown in CCTV images from the airport wearing a white top with the letters "LOL" emblazoned on the front, according to Malaysian media.
One South Korean friend of Kim Jong-nam's in Macau said, "Kim Jong-nam was a fan of the Korean pop culture and told me several times that he would like to visit Seoul some day".
North Korea has said it rejects the autopsy conducted in Malaysia because it did not participate.
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Deputy Prime Minister Ahmad Zahid Hamidi told the press that Kim Jong Un's half-brother had travelled with a passport with the name "Kim Chol".
In Indonesia, Aisyah's family and neighbours in western Jakarta said they were stunned by her arrest, describing her as a polite and quiet young mother.
According to The Star, the 47-year-old suspect was arrested after police raided a condominium in Jalan Kuchai Lama, Kuala Lumpur at about 11pm local time on Friday.
"Such an action was done three or four times and they were given a few dollars for it, and with the last target, Kim Jong Nam, allegedly there were unsafe materials in the sprayer", the police chief said.
Malaysian policemen guard the entrance to Forensic Department, where the body of Kim Jong-nam rests, at Kuala Lumpur General Hospital.
North Korea vowed to reject the results of any post-mortem.
Kim has lived in Macau, a Chinese territory and popular gambling destination, since his departure from North Korea years ago.
On Friday, Indonesia's police chief said an Indonesian woman who had been arrested for suspected involvement in the killing had been duped into thinking she was part of a comedy show prank.