[(Title)] 6.6-magnitude earthquake shakes Japan.

Sept. 5 (UPI) -- A powerful 6.6-magnitude earthquake shook the northern Japanese island of Hokkaido early Thursday morning, the U.S. Geological Survey said.

美国地质调查局表示，周四早上，一场强大的6.6级地震震撼了日本北部北海道岛。

The earthquake struck at about 3 a.m. and was centered about 17 miles east of the city of Tomakomai, with a depth of about 21 miles, the USGS said.

美国地质调查局称，地震发生在凌晨3点左右，位于苫小牧市以东17英里处，深度约21英里。

There was no threat of a tsunami following the quake.

地震之后没有发生海啸的威胁。

Hokkaido prefectural officials said an 82-year-old man fell down in a house in Tomakomai during the quake and had no heartbeat and wasn't breathing, NHK reported.

据NHK报道，北海道省官员称，地震导致一名82岁的男子在苫小牧市的一所房子里摔倒，此后停止了心跳和呼吸。

Firefighters said five houses collapsed in the town of Atsuma, while two others collapsed in the city of Sapporo.

消防队员说，在厚真町，有五座房屋倒塌，而在札幌市，另有两座房屋倒塌。

Abira Town officials reported shattered windows and power outages, while images from Sapporo showed a crack in a road and other images from Chitose City showed displaced tiles from a house.

安平町官员报告了窗户破碎和停电，而札幌的图像显示道路上有裂缝，而千岁市的其他图像显示房屋有瓷砖掉下来。