A magnitude-6.3 earthquake and tsunami hit western Japan on Sunday, killing at least seven people and destroying hundreds of homes and businesses.
The quake, which struck near the coastal city of Fukushima, killed at least 11 people, according to the Japan Meteorological Agency.
The death toll could rise as many people are still missing.
The tsunami struck the same day as the deadly quake, but the latest wave was far weaker.
The Pacific Tsunami Warning Center said a magnitude-7.3 quake struck about 2:30 a.m. local time (7:30 p.m., Japan time) in the area of Iwate prefecture, near the Japanese border.
The wave hit a small island called Koto Island, about 100 miles (160 kilometers) south of the Fukushima Daiichi nuclear plant, the center said.
Tsunami waves can travel much farther than a magnitude 6.3 or 7.3.
But the tsunami was relatively weak, and the wave traveled in a relatively shallow wave, according with the Japan Tsunamiscience Center.
Tens of thousands of people were evacuated from their homes in the Fukushima prefecture as the tsunami moved through the region, but many people returned home within hours, according the Japan Earthquake Agency.
A tsunami warning was issued for the northern Japanese prefecture of Miyagi, and tsunami warnings were issued for Miyagi and Toyama prefectures, the government said in a statement.
It said that more than 1,000 people were hospitalized.
In Miyagi alone, at least nine people died, including a mother and her child.
About 10,000 others were injured, the Miyagi prefectural government said.
The U.S. Geological Survey recorded the quake’s epicenter at a depth of 8 kilometers (5.3 miles), with a depth-to-height increase of more than 300 meters (1,400 feet), according to data from Japan’s Nuclear Regulation Authority.
The center of the tsunami, Miyagi Island, lies on the western coast of Miyabe, and its center, Takahashi, is located just off the coast.
The government has not yet released the death toll, but officials said a total of 18,000 to 24,000 died in the region.
The death toll from the Fukushima nuclear disaster was higher, as the total number of dead was around 30,000.
More than 1.3 million people were affected by the earthquake, which was centered about 50 kilometers (30 miles) north of the city of Miyabashi in the prefecture.
The Fukushima nuclear plant has been offline since March 2011.
The agency warned that radiation levels from the earthquake could pose a risk to people and the environment, and authorities have deployed radiation monitoring equipment to the site.
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