Well this story looks like any other stories occuring in Thailand where a ya baa fueled guy does "stunts" to buy their next pills... nationality is irrelevant, ya baa addicts most common sense and act crazily, it's both news and no news to my eyes...
A friend had a Ya Baa addict in his neighbourhood (talking to himself, holding a big knife, looking in the various property, even wanking in the middle of the streets while looking at the female neighbours).
A soft hearted neighbour was trying to help him (giving food and support) but eventually the guy bit the hand that fed him and mugged him...then burglarized a house, found a gun, and pointed it to another neighbour's head...glad he didn't shot, then he went away to a temple, stayed 2/3 days then drew his gun at the abbot and stealed the temple money ...he eventually got arrested
No logic here, no plan, nothing...this drug is a threat to society and doesn't care what your nationality is...