Oct. 3 (UPI) -- The assassinated half-brother of Kim Jong Un showed signs of serious nerve poisoning immediately following an attack at an airport in Kuala Lumpur.
Results of an autopsy of Kim Jong Nam, 45, showed critically low levels of a key enzyme, a symptom he may have been poisoned by insecticide or a nerve agent, Singapore's Straits Times reported Tuesday.
Nur Asyikin Osman, a chemical pathologist with the Malaysian government, said in her court testimony a blood analysis of Kim indicated the enzyme cholinesterase was at a very low level of 344 units per liter, when the normal level is 5,300 units per liter, according to South Korean news agency Yonhap.
Muscle paralysis can occur if enzyme inhibitors that increase the action of acetylcholine -- by delaying its degradation -- are present in the system.
Nik Mohd Azrul Ariff Raja Azlan, the doctor who was at the airport clinic where Kim was treated immediately after the attack, said the exiled North Korean man had "constricted pinpoint pupils," low blood pressure and very low oxygen levels when he was escorted to the clinic.
Airport clinic medial assistant Rabiatul Adawiyah Mohd Sofi who had testified earlier said Kim was in pain upon arrival but was also not responsive to questions.
Azlan confirmed Kim was "clutching his head and he was closing his eyes tightly and his face was very red and he was sweating profusely," CNN reported..
The two women accused of attacking Kim at the airport, Doan Thi Huong, of Vietnam, and Siti Aisyah, of Indonesia, have pleaded not guilty for the slaying of North Korean leader Kim Jong Un's half-brother.
Both women said they believed they were rubbing a harmless substance on Kim's face as part of a reality television prank, although Huong was seen in surveillance cameras holding her hands away from her face as she made her way to an airport restroom immediately following the attack.