The strong earthquake that struck Tuesday off the coast of Fukushima prefecture was an aftershock of the magnitude 9.0 earthquake that spawned a deadly tsunami in the same region in 2011, the Japan Meteorological Agency said.
The agency warned that another large quake could hit in the next few days and urged residents to remain cautious for about a week.
Lines of cars were seen snaking away from the coast in the predawn hours after authorities issued a tsunami warning and urged residents to seek higher ground immediately. The warning was lifted nearly four hours later.
The magnitude 7.4 aftershock struck in the same region that was devastated by a tsunami in 2011,...