Police say that 32-year-old truck driver Pham Thanh Hieu, who surrendered hours after causing a most horrific accident Wednesday that killed four and badly injured 16 others, had high concentrations of alcohol in his blood and also tested positive for heroin. One of the worst traffic accidents in the southern province of Long An prompted Deputy Prime Minister Truong Hoa Binh to order an urgent investigation into its cause as also steps to overcome its consequences. At around 11 p.m., the driver was taken to the province’s general hospital for urine and blood tests. Three hours later, he was tested again, and the results of the first tests were confirmed. Normally, a drug test that uses urine samples can detect heroin metabolites for one to three days after the last drug use. Pham Thanh Hieu, 32, is held at local police station after the accident that killed four and injured 16 others. Photo courtesy of Long An Police Hieu is being held at police station to face charges of … [Read more...] about Driver in deadly Vietnam crash high on liquor, heroin