Police in Hanoi have arrested three including a Vietnam Airlines technician for trying to smuggle three kilograms of gold on a flight to Incheon in South Korea on Tuesday night.
Customs officers found the gold hidden under the seat of one male passenger, Nguyen Ngoc Sang, while checking the aircraft before it took off.
They found out the man, 30, was attempting to smuggle it into South Korea with the help of another female passenger. The woman, Hoang Thi Ngoc Anh, 34, works as a flight attendant for a local carrier.
The technician, whose identity has not been revealed, reportedly passed them the gold after the duo completed security and customs check.
Passengers have to report to customs if they want to carry more than 300 grams of gold out of or into Vietnam.