South Korean and Cambodian officials have met to address online scams after a South Korean student died in Cambodia.

Every year, tons of heroin, cocaine, methamphetamine and other drugs flow around the world.

The number of methamphetamine tablets seized in East and Southeast Asia exceeded a billion last year, highlighting the scale of illegal drug production and trafficking in the region.

Police in the Southeast Asian nation of Laos have made their second huge seizure in three months of methamphetamine.

That's up from $15 billion a year in 2010, the last time the UNODC estimated the value of the meth trade in the region. A perfect stormExperts say the boom in southeast Asia's meth industry is the result of a perfect storm of factors, which have seen Myanmar's lawless Shan State emerge as the region's meth factory. Lax regulation in Shan State, coupled with its porous borders, have enabled meth makers to easily import the required chemicals to make meth. More than half of those busts took place in Thailand, where authorities confiscated more than 515 million meth pills, according to UNODC. But Thailand has emerged as the real front line in this fight against the meth trade.