Earlier this month, word came from sources in Germany that Phuket police should be on the lookout for cocaine smugglers.
As a result, Thalang police staked out a local company and also kept an eye on a post office box address at Thalang Post Office.
On Monday they observed Suwinion Sampaorat, 44, pick up a parcel adressed to the post office box.
She was apprehended. Police found three shoulder bags in the parcel concealing a form of cocaine with a street value of six million baht.
Khun Suwinion said that she was only picking up the parcel on behalf of a friend, wine saleswoman Sirikorn Pankrajang, 45.
Police then hauled in Khun Sirikorn for questioning. She told them the parcel was actually meant for her boyfriend, Nigerian Kevin David. She met him at a Christian church in Bangkok, she told police.
Officers are now looking for the Nigerian man and the two women are being held pending formal charges.