A powerful earthquake on Hokkaido Island in Japan triggered landslides that buried a "large" number of homes, a Japanese broadcaster reports, per CNN. Several aftershocks—one as powerful as 5.4 magnitude—followed the main quake, according to reports. An 82-year-old man died after he fell down the stairs at his home, Channel NewsAsia reports. And authorities received hundreds of calls about missing people and damaged buildings in the aftermath, per the AP.
Some 3 million households reportedly lost power. The magnitude 6.6 quake (as measured by the US Geological Survey), which lasted 30 seconds to a minute, was relatively shallow, and no tsunami warning was issued, according to reports. Officials warned that more quakes may occur and urged "residents to pay full attention to seismic activity and rainfall and not to go into dangerous places," per Channel NewsAsia. (Read more Japan earthquake stories.)