Myanmar police say they have seized a huge haul of liquid fentanyl – the first time the dangerous synthetic opioid that is ravaging North America has been found in Asia’s Golden Triangle drug-producing region. In a sign that Asia’s drug syndicates have moved into the lucrative opioid market, more than 3,700 litres of methylfentanyl was discovered by anti-narcotics police near Loikan village in Shan State in northeast Myanmar. The seizure of the fentanyl derivative was part of Asia’s biggest-ever interception of illicit drugs, precursors and drug-making equipment, including 193 million methamphetamine tablets known as yaba. At 17.5 tonnes, that is almost as much yaba as has been seized during the previous two years in Myanmar. The UN Office on Drugs and Crime (UNODC) said the scale of the bust was unprecedented and Myanmar’s anti-drug authorities had “dismantled a significant network” during a two-month operation involving police and military. Also seized were almost 163,000 litres and 35.5 tonnes of drug precursors – substances that can be used to produce drugs – as well as weapons. There were more than 130 arrests.