Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: Kuala Lumpur, Malaysia (CNN) The body of Kim Jong Nam, the estranged half brother of North Korean leader Kim Jong Un slain last month, was identified using a DNA sample from his son, Malaysian authorities said Thursday. The sample was obtained by Malaysian authorities who went overseas to get it, Malaysia Deputy Prime Minister Ahmad Zahid Hamidi said. Kim Jong Nam was killed February 13 in what Malaysian Prime Minister Najib Razak has called an assassination attempt. Kim was at Kuala Lumpur International Airport on his way to Macau when two women wiped his face with the highly lethal VX nerve agent, killing him in 20 minutes, Malaysian police said.Kim Jong Nam was identified publicly last week after Malaysia received DNA sampleSouth Korea and Malaysia accuse North Korea of killing Kim; Pyongyang denies it 
 Question:Authorities from both countries have said the women believed they were participating in a prank TV show, but _ authorities do not believe that's true.

Malaysia