US citizen caught at Vietnam airport with giant heroin haul   The US national of Vietnamese origin, identified only as D. Jason, 40, after being arrested for attempting to transport 1.1 kgs of heroin from Vietnam to Australia. Photo courtesy of the Tan Son Nhat International Airport's customs department Ho Chi Minh City police have arrested an American man caught attempting to transport 1.1 kgs of heroin – an amount which qualifies him to receive the death penalty – from Vietnam to Australia. Customs officials found the drugs in the suitcase of the US national of Vietnamese origin, identified only as D. Jason, 40, Tuesday at the Tan Son Nhat International Airport before he could board his Sydney-bound flight. Further investigations are underway, the police said. The US embassy in Hanoi was not immediately available for comment. Vietnam has some of the world’s toughest drug laws: those convicted of smuggling more than 600 grams of heroin may be sentenced to death.   The heroin seized from D. Jason. Photo courtesy of the Tan Son Nhat International Airport Last October, Vietnam sentenced a 61-year-old Filipina to death after she was caught smuggling five kilograms (11 pounds) of methamphetamine into the country. In June 2012, a Ho Chi Minh City court handed down the death penalty to a 23-year-old female student from Thailand for trafficking three kilograms of methamphetamine from Benin to Vietnam. Death penalty statistics are not released in Vietnam, but the punishment is handed down most frequently to those convicted of murder or drug-trafficking.  By Thanh Nien News