The woman arrested over the assassination of Kim Jong-un's half brother has said she thought she was 'playing a prank', it has been reported.
Kim Jong-nam, 46, is believed to have been grabbed from behind by a female killer and poisoned as he waited to board a flight at Malaysia's
Kuala Lumpur airport on Monday morning.
It is believed the assassin somehow sprayed him with poison, possibly from a fountain pen.
Jong-nam told staff he felt "dizzy" then suffered a seizure and was taken to hospital where he died hours later.
CCTV images later emerged of a suspect waiting outside for a taxi.
The young woman is wearing a short skirt, pink tights and a white jumper with 'LOL' printed on the front.
Malaysian police say they have arrested a woman who has documents which identify her as 28-year-old Doan Thi Huong from Nam Dinh in Vietnam.
According to local media, she says she travelled to Malaysia with a group of four men and another woman for a holiday.
She has told police the group told her to play a 'prank' on Jong-nam at the airport and "spray him with a liquid".
"They told me it was a prank. I did not know it was meant to kill him,” Oriental Daily reported the suspect as saying.
The second woman covered Jong-nam's mouth with a handkerchief as she sprayed him.
Reports in Chinese media say that following the incident, the two women jumped into a taxi and left the airport.
The four men made their way to a hotel.
The suspect claimed that when she could not find her companion and the four men, she headed back to the airport the very next day, where she was arrested by police who identified her from the CCTV.
Police confirmed they are still on the look out for more suspects in the case.
Kim Jong Name is believed to have been poisoned by two female assassins(Photo: AFP)
Jong-nam is believed to have been assassinated on the orders of his despot half-brother Kim Jong-un.
He had survived at least one previous attempt on this life in 2012.
South Korean intelligence reported that he wrote a letter to Jong-un begging for his life.
But it appears Jong-nam was never forgiven for criticising his half-brother.
He had lived most of his life in exile.
Jong Nam was known to be based mostly outside of his home country and had spoken out publicly against his family's dynastic control of the isolated state.
He said several times over the years that he had "no interest in leading his country."
"Personally I am against third-generation succession," he told Japan's Asahi TV in 2010, before his younger brother had succeeded their father.
"I hope my younger brother will do his best for the sake of North Koreans' prosperous lives."
"If the murder of Kim Jong Nam was confirmed to be committed by the North Korean regime, that would clearly depict the brutality and inhumanity of the Kim Jong-un regime," South Korean Prime Minister Hwang Kyo-ahn, the country's acting president, told a security council meeting.
Police are still investigating the cause of death and a post mortem is due to take place later.