Seven female South Korean tourists were caught attempting to smuggle blocks of gold into Japan. According to The Asahi Shimbun they had been hiding almost half-a-pound of the precious metal in their rectums.

The Asahi Shimbun reports: The suspects, all women in their 50s and 60s, were traveling from Incheon International Airport, South Korea, to Chubu Airport here. Metal objects were detected in their abdomen by X-rays and other inspections at customs.

The objects were found to be roundish-shaped blocks of gold sealed inside transparent bags. Each woman had concealed between five and eight items weighing about 200 grams each, which were confiscated by customs inspectors.

The airport’s customs bureau intends to fine the women for smuggling and avoiding paying consumption taxes on imported goods. The gold will be returned to them if they pay the penalties.

Customs officials at Chubu Airport said it was a rare case due to the attempted smuggling method.