Immigration police said they had received a tip-off yesterday that drugs were being transported from Chiang Rai to Bangkok using the low-cost airport.

Police stopped the two Thai women Anu Ma-Yer, 28 and Sukanda Chue-Mue, 26, after their flight landed today.

A body search found a total of 3,473 speed pills packed in condoms and hidden in the women's vaginas.

They admitted to having brought the drugs to Bangkok to deliver them to a dealer.

Later, police set up a sting operation and arrested the dealer.