Chemist says Kim had 1.4 times lethal dosage
SHAH ALAM, MALAYSIA — The estranged half brother of North Korea’s leader had about 1.4 times the lethal dosage of VX nerve agent on his face after he was attacked at a Malaysian airport, a government chemist testified Tuesday.
VX was found on Kim Jong Nam’s face, in his eye and in his blood plasma, Raja Subramaniam, who heads the Center of Chemical Weapons Analysis laboratory, said at the murder trial of two women accused of smearing the chemical weapon on Kim in the brazen assassination in February.
VX and related products were also detected on the clothes the women were wearing on the day of the attack. On Monday the trial moved temporarily to a high-security laboratory so the judge, attorneys and the defendants could examine the clothing before it was officially accepted as evidence.
Resuming his testimony Tuesday, Raja described VX’s lethal potential. He said animal studies showed the lethal dosage is 0.142 milligrams per kilogram of body weight, and that 50 percent of the tested population will die when exposed to this dosage on their skin.
Raja estimated the concentration on Kim’s facial skin was 0.2 milligram per kilogram of body weight.
Asked if this amount was enough to kill him, Raja said: “I can’t give a direct answer on this. Based on concentrate estimate, it is about 1.4 times the lethal dosage.”
He acknowledged that more of the poison might be needed to kill a heavier person but had no data on it.
He said the VX concentrate in Kim’s eye was estimated at only 0.03 milligrams per kilogram of his body weight, but that correlated to VX penetrating faster through the eye than through the skin. VX was also found on the collar and sleeves of Kim’s blazer, probably because he wiped his face on his blazer after the attack, Raja said.
The two defendants, Doan Thi Huong from Vietnam and Siti Aisyah from Indonesia, pleaded not guilty at the start of the trial last week to murder charges that carry a mandatory death sentence if they are convicted.
Raja’s finding of VX on the women’s clothing and on Huong’s fingernails was the first evidence linking VX to the two suspects. Their attorneys have said the women were duped by suspected North Korean agents into believing they were playing a harmless prank for a hidden camera TV show.
Under cross-examination, Raja said it wasn’t possible that the VX used to kill Kim was a “binary” concoction of two nonfatal elements because high temperature would have been required to create VX.
He agreed with the defense’s assertion that actual VX could have been smuggled into Malaysia or a nonfatal compound could have been smuggled into the country and mixed with sulfur to create VX in a clandestine laboratory.
One item where Raja detected VX was not officially admitted as evidence in the case: the blazer Kim was wearing when he was attacked. Raja testified it was not available because police told him to return Kim’s personal belongings, including his blazer and bag, to North Korea.
Police officer Wan Azirul Nizam Che Wan Aziz, the chief investigating officer in the murder, told the court that an airport security video taken before the attack on Kim showed Huong softly wiping the face of another person at the same airport terminal, in what he described as a practice session for the attack on Kim. Huong then clasped her hands together and bowed her head as if she was apologizing before retreating slowly, he said.