An magnitude 6 earthquake struck off the coast of central Japan at 11:39 a.m. local time today, halting bullet trains and triggering an early warning alert. No tsunami warning was issued and there were no immediate reports of damage.

The temblor struck in the ocean off central Japan at a depth of 10 kilometers, and about 170 kilometers from Osaka, causing relatively strong shaking, according to the U.S. Geological Survey and the Japan Meteorological Agency. The earthquake was located about 50 kilometers from the town of Taiji, depicted in the 2009 documentary The Cove for its annual dolphin hunt.

Bullet trains were briefly halted after the quake, NHK reported. Elevators were also automatically stopped at Japan’s tallest building, the 300 meter-tall Abeno Harukas in Osaka, the public broadcaster said.

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