Police seized 2.2 million amphetamine pills hidden in a warehouse in northern Thailand.

Officials intercepted the massive shipment at the Duangdee Transport Co. Ltd., in Chiang Rai province following investigations that the contraband was destined into inner Thailand from the border.

Police Major General Worapat Boonma, commander of Border Patrol Police Region 3, said in a May 22 press conference that they arrested suspected smugglers Sakda, 52, Anucha, 28, and Kiatisak, 28, who were found packing the amphetamine pills for transport.

He said: 'We followed the suspects' vehicle to the warehouse of a logistics company in Chiang Rai. Properties, including two houses in Mae Sai district, two ten-wheeler trucks, three pickup trucks, a Toyota Fortuner car, and other items, were seized.

'The total value of the confiscated assets is estimated to be over 10 million THB (214,000 GBP).'

Sakda allegedly told the cops that he was hired to store the drugs for 20,000 THB (430 GBP).

Meanwhile, the other two reportedly agreed to transport the amphetamine pills across the Thai-Myanmar border for 50,000 THB (1,071 GBP) each.

Thai officials had earlier warned of a drug influx into Thailand as civil war rages in neighbouring Myanmar.

Thailand has become a notorious hub for drug production and trafficking. In the north of the country, the ‘Golden Triangle' area shares borders with Laos and Myanmar, and has produced large amounts of opium since the 1950s but focus in recent years has shifted to the more profitable methamphetamine.

Officials believe most of the meth is produced in the Shan State of Myanmar before being distributed through neighbouring countries where prices are higher before ending up in the most expensive markets of Australia, Japan, Hong Kong, Taiwan, and Singapore.