A strong 6.1-magnitude earthquake struck India's northeastern state of Arunachal Pradesh today, the US Geological Survey said. The epicenter of the shallow quake was about 40 kilometres (25 miles) southeast of Along, and 180 kilometres southwest of the state capital Itanagar.

It struck at 1.45 am. Arunachal Pradesh is India's least densely populated state, but is still home to more than 1.2 million people, according to the state government's website.

China's official state news agency Xinhua said the quake was also felt in Tibet. USGS estimated there was a "low likelihood" of casualties and damage from the quake.

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