Thamolwan Yodlek, 25, appeared pale and nervous as she crossed the Aranyaprathet border checkpoint. Female rangers searched her body and found 0.612 grams of ketamine in a zip bag in her handbag.
She was taken to the 1201st Ranger Company for questioning. She said she had bought the drug in Cambodia to use it at a casino but had not ingested it.
She was transferred to the Klong Luek police station for further legal action.