A Vietnamese Australian was arrested Sunday in Tan Son Nhat Airport when she allegedly attempted to board a flight from Ho Chi Minh City to Australia with nearly 5 kg of heroin in her baggage.
Customs and police officers said the heroin were split into 26 bags hidden carefully in her baggage.
The 37-year-old woman, whose name was not revealed, told the police that she would be paid US$25,000 for the job.
They estimated the value of the smuggled heroin to be as high as $750,000 once it could reach Australia.
The police said they are investigating further.
A court in HCMC last month sentenced another Vietnamese-Australian woman to death for attempting to smuggle 2.8 kilograms of drugs to Sydney.
According the the customs office of Tan Son Nhat Airport, officers have found 1.1 tons of stimulant leaves khat from Africa, and nearly 15 kg of cocaine, heroin and methamphetamine in the first half of 2016.