Kim Jong-nam was killed at Kuala Lumpur airport after being attacked by two women with "poisoned needles," according to local TV reports.
The two women, believed to be North Korean agents, escaped in a taxi and remain at large, TV Chosun reported.
Yonhap News, citing a South Korean government source, also reported Mr Kim had been killed.
Malaysian police told Reuters an unidentified North Korean man died en route to hospital from a Kuala Lumpur airport.
|Kim Jong-nam and his brother|
The police said the man's identity had not been verified.
An employee in the emergency ward of Putrajaya hospital told the agency a deceased Korean there was born in 1970 and surnamed Kim.
Mr Kim went into hiding in Malaysia after the execution in December 2013 of his uncle, Jang Song-thaek, the once-powerful uncle of the current leader.
He was known to spend a significant time outside the country and had spoken out publicly against his family's dynastic control of the isolated state
The eldest son of Kim Jong-il, he survived an assassination attempt in Macau in 2011.
PLACE YOUR TEXT ADVERT BELOW:>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> How I Made Me =N=2.5 MILLION In 7 Days from 2 Common Product I Imported and how you can do the same. Click HERE FOR FREE Details right now Warning To Men: This 3 Foods Is Killing Your Erection. Click Here To Know Them Secret Fruits that increased my Manhood and makes me last 55 minutes+ all time - Click here to get it Warning: Got Arthritis? 3 Simple Ways To Get Cured And Be Permanently Free From Joint Pains. Click Here To See Them REVEALED!! Reduce Your Blood Sugar Level And Reverse Diabetics Within A Short Period Of Time. Click Here To See How MIDNIGHT,Pressed Mr Kilanko Suddenly Couldn't Urinate. Shrink your Enlarged Prostrate Here! Click Here Now