Seven people were injured in a strong earthquake that struck the Tohoku northern Japan on Saturday, shaking buildings even in Tokyo and triggering a tsunami advisory for a part of the northern coast, officials of relevant local governments and fire departments said Sunday. 

Their injures are not serious, according to the local authorities.

Six of the seven people that were injured are in Miyagi Prefecture, where the quake measured up to higher 5, the fourth-highest level on the Japanese seismic intensity scale.

In the town of Misato, a woman in her 90s hit her head against a door that came off. Four people suffered injuries in Sendai, the capital of Miyagi.

In the city of Date in Fukushima Prefecture, south of Miyagi, a 77-year-old woman fell and hit her tailbone, and was sent to hospital.

The U.S. Geological Survey put the strength of the quake at magnitude 7.0 and depth at 54 kilometers (33.5 miles). The shaking started just before 6:10 P.M.

Japan’s Meteorological Agency issued an advisory for a tsunami up to 1 meter (yard) in height for Miyagi prefecture immediately after the quake, but lifted it about 90 minutes later.

Evacuation centers were opened in some coastal municipalities in the prefecture. The shelters were closed later, and no one is now evacuated.

East Japan Railway Co., or JR East, temporarily suspended operations on part of its Tohoku Shinkansen bullet train line, which connects Tokyo and the Tohoku region.

JIJI Press/ AP