A 17-year-old student in Nilai, Negeri Sembilan, tested positive for ketamine, benzodiazepines, and tetrahydrocannabinol (THC).
The matter came to light when a video showing the student appearing in an alleged dazed state after vaping on 28 October went viral online.
Police took note of the video circulating on the Threads platform on 4 November and launched an investigation into the claims.
Negeri Sembilan police chief Datuk Alzafny Ahmad said the preliminary urine screening results are still subject to further confirmation.
