District chief Noraset Sitapasuso said Ning Jaidee, 34, and her girlfriend Warirat Plungjeh, 26, were arrested at a karaoke bar in a sting operation.
They allegedly sought to sell two-tenths of a gram of “ice” (crystal meth) to a district undercover officer for Bt1,000.
Noraset said he planned the sting operation after his office was tipped off about the couple allegedly selling drugs in the area.