The death toll from Japan's magnitude-6.1 earthquake has risen to four as about 1500 people spent the night at evacuation centres amid fears of aftershocks, authorities say.
An 81-year-old woman was found dead in the western city of Takatsuki after a wardrobe fell on top of her, local officials said, while the number of injuries grew to about 340 in Osaka prefecture and surrounding areas.
The quake struck Japan's second-largest metropolitan area on Monday, the Meteorological Agency said, adding that it occurred at a depth of 13 kilometres.
The agency warned that another powerful quake could hit the same region within a week.
Local officials started recovery efforts in some areas of Osaka, where water supply had been disrupted. Following the quake, Osaka Gas suspended gas supply to about 110,000 households and said it would take more than a week to fully restore services.
Train services in western Japan returned to regular operation early Tuesday after the quake disrupted railway networks, leaving hundreds of thousands of people stranded at stations and on streets.
Many locals told local media that Monday's jolt reminded them of the 7.3-magnitude quake in 1995 that hit nearby Hyogo prefecture, killing more than 6400 people.
