Two women accused of murdering Kim Jong Nam, the half-brother of North Korean leader Kim Jong Un, officially pleaded not guilty at a Malaysian High Court on Monday.

The 29-year-old Vietnamese national Doan Thi Huong and the 25-year-old Indonesian national Siti Aisyah are accused of murdering Kim by smearing his face with the VX nerve agent at Kuala Lumpur International Airport (KLIA) on February 13.

The Royal Malaysia Police (RMP) arrested Doan on February 15 and Siti on February 16 after the two were identified through CCTV footage of the attack. 

The RMP later said that VX – an internationally