Wan Azirul told the court that police obtained a total of 23 DVDs of CCTV recordings from the worldwide airport, 22 of which were from the day Kim Chol was killed while only one was on Feb 11.
Vietnamese national Doan Thi Huong (L), along with Indonesian Siti Aisyah are accused of killing Kim Jong-Nam on February 13 at Kuala Lumpur airport.
Two women are suspected of killing Kim by smearing two parts of VX, a nerve agent banned by the United Nations as a weapon of mass destruction, on his face.
The eighth prosecution witness when explaining the lethal potential of VX, said the concentration of the deadly VX nerve agent found on the skin of Jong Nam was 1.4 times the lethal dosage.
"To me, her action was quite aggressive", the police officer said, adding that Doan seemed to retreat in haste, walking very quickly.
Aisyah, 25, and Doan, 28, have denied the charges, saying they thought they were playing a harmless prank while being filmed for a hidden-camera TV show.
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The witness also agreed to a suggestion by defence counsel Gooi Soon Seng that binary method (combining two elements to make a lethal VX dose during attack) was not possible in this case. The trial on Monday had temporarily moved to a high-security government laboratory for the judge, attorneys and the defendants to examine the clothing before it was presented as evidence.
Raja is to be cross-examined by defense lawyers when the trial resumes Tuesday.
He testified that analysis revealed that VX on the deceased was 0.2mg per kg body weight, about 1.4 times the dose that is known to be lethal to human.
Asked if this amount was enough to kill him, he said: "I can't give a direct answer on this".
Mr Raja's finding of VX on the women's clothing and Huong's fingernails was the first evidence linking VX to the two suspects. Raja testified it was not available because police told him to return Kim's personal belongings, including his blazer and bag, to North Korea.
Prosecutors have said they will present airport security videos this week that allegedly show the two women carrying out the attack and indicate they knew they were handling poison.
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"We have an uphill battle in this case. They have the upper hand but we have our own strategy", prosecutor Wan Shaharuddin Wan Ladin told reporters.
They were charged along with four others, who are still at large, with the murder of Kim, 45, the estranged half-brother of North Korean leader Kim Jong-un, at the KL International Airport 2 departure hall at 9am on Feb 13 this year.
An airport security video reviewed by The Associated Press on Monday shows what may be Kim's final recorded moments of life after he fell perilously ill at the Kuala Lumpur airport.
After the gurney carrying Kim's motionless body is brought into an apparently authorized personnel-only area of the airport for transfer to an ambulance, one of the five people with him summons the elevator.
Earlier, sources had told The Malaysian Insight that all the clothes belonging to Jong-nam, the half-brother of North Korean leader Kim Jong-un, had been returned, along with the body, to Pyongyang in February.
The video was first broadcast late Sunday by Japan's Fuji TV.
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VX is banned by an worldwide treaty as a weapon of mass destruction but is believed to be part of North Korea's chemical weapons arsenal.