TOKYO, Japan (UPDATE) - At least 15 people were injured after a magnitude-6.7 earthquake struck Japan's northeastern region late Tuesday, authorities said Wednesday.
The Japan Meteorological Agency warned of potential landslides and collapse of houses, and said there was a chance of more quakes of similar levels hitting Yamagata and Niigata prefectures over the following week. It also forecast rain in part of the region on Wednesday.
Nine people were injured in Yamagata, 4 in Niigata, and 1 each in Miyagi and Ishikawa prefectures, the Fire and Disaster Management Agency said.
The earthquake occurred around 10:22 p.m. at a depth of about 14 kilometers, with its epicenter located off Yamagata, according to the meteorological agency. A tsunami warning was issued but lifted hours later.
The quake registered upper 6 on the Japanese seismic intensity scale of 7 in Murakami in Niigata, forcing thousands in the city and its neighboring municipalities to take shelter temporarily at evacuation centers.
East Japan Railway Co. said the quake caused some delays to its bullet train services Tuesday, affecting around 10,000 people. It began Wednesday's services normally.
Airlines said the earthquake will not affect flights to and from the affected region Wednesday.