Teh Geok Chin, a tiler then aged 47, had pleaded guilty in the Johor Bahru High Court to trafficking 1,024.60 grammes of cannabis found at an apartment on Jalan Muafakat, Larkin, at about 00:10 on 18 April 2019.[1][2] In October 2023 the court sentenced him to 30 years in prison and 12 strokes of the rotan, the term Malaysia uses for life imprisonment in this context.[1][2]

On 3 January 2026 a Court of Appeal bench dismissed his appeal.[1][2] Justice Mohamed Zaini Mazlan held that after a voluntary guilty plea Teh could not challenge the conviction under section 305 of the Criminal Procedure Code and might contest only the sentence.[2] The High Court had followed the section 173(b) procedure, reading the charge to him in Mandarin, and the appellate court found no basis to reopen the conviction.[1][2]

On sentence, the judge said the High Court had only two lawful options for trafficking at this weight: the death penalty or life imprisonment with mandatory whipping, and the 30-year term was already the minimum.[1][2] The appeal against sentence was therefore dismissed.[2]