The case has been classified as an unnatural death.
The three-year-old male rescue cat went missing on 10 May.
The rates of active TB and latent TB detected during the screening were "within expectations", CDA said.
The incident allegedly happened after the boy crossed the road while the traffic lights were not in his favour.
Authorities are investigating how the train driver was allowed to operate.
At least 10 businesses are believed to have fallen victim to similar scams.
The rescue team used a human relay chain to carry the man out, passing him hand-to-hand along the rocky trail.
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Thorny on the outside, sweet on the price.
Four other Thai children remain in Malaysia.