Magnitude 6.6-quake jolts Japan coast

Fires burned in northeastern Japan Monday evening after a powerful earthquake rattled the region, sending a landslide into Iwaki City, authorities said. A preliminary estimate put the quake's magnitude at 7.1, which was later lowered to 6.6, according to the U.S. Geological Survey. A series of smaller quakes continued to shake the region. Residents in Tokyo also felt the jolts. A tsunami warning issued by Japan's Meteorological Agency was later canceled.

Monday's initial quake was centered about 164 kilometers (101 miles) northeast of Tokyo, or about 50 kilometers (31 miles) southwest of the crippled Fukushima Daiichi nuclear plant. Workers at the plant were asked to evacuate for a time, but later returned to resume their efforts to cool the troubled nuclear facility. The Tohoku Electric Power Company said 220,000 households and businesses in Fukushima were without power after Monday's quake, which came a month after a deadly magnitude-9 quake and tsunami devastated the island nation.