FILE - In this Feb. 26, 2017, file photo, a hazardous materials crew conducts an investigation at the main hall of Kuala Lumpur International Airport 2 after the death of Kim Jong Nam, estranged half brother of North Korean leader Kim Jong Un. Two women accused of poisoning Kim in a bizarre airport assassination are expected to plead innocent when they appear in a Malaysian court on Friday, July 28, 2017. Indonesian Siti Aisyah and Vietnamese Doan Thi Huong are suspected of smearing Kim Jong Nam's face with the banned VX nerve agent at a crowded airport terminal on Feb. 13. The women, who face the death penalty if convicted, said they thought they were playing a harmless prank for a hidden-camera show.  (AP Photo/Daniel Chan, File)