The war, now in its seventh month, has killed more than 34,000 Palestinians, according to Gaza health authorities
The quake hit Nagano City and Hakuba village in Japan where at least 10 homes collapsed late Saturday, Xinhua reported Sunday citing local authorities
No damage was reported at a nearby nuclear power plant in Niigata Prefecture, according to its operator.
Local authorities were still assessing the damage and injuries in Nagano City , which hosted the 1998 Winter Olympics.
The meteorological agency also warned of possible strong aftershocks in the coming week.