A shallow 6.1-magnitude earthquake hit northwestern Lao near the Thai border early Thursday, the United States (US) Geological Survey reported, alarming locals who felt buildings shake as far away as Bangkok.The quake hit at 6:50am (2350 GMT Wednesday), roughly three hours after a 5.7-magnitude earthquake in the same region triggered an immediate suspension to Lao's largest-capacity power plant located near its epicentre. Tremors could be felt more than 700 kilometres (435 miles