Four people were killed and over one hundred injured when the 7.1 magnitude earthquake that struck Thursday night the north-eastern Japan, there already devastated nearly a month by an earthquake and tsunami giants According to the Agency Disaster Management and Media.
A woman of 63, who was on life support, died in Yamagata Prefecture, according to the Agency.
Two men aged 79 and 85 were killed in Miyagi Prefecture, according to public broadcaster NHK and Jiji Press.
In the city of Tome (Miyagi Prefecture) a woman of 83 years died after being admitted to hospital, Jiji said, quoting a doctor.
She has reassessed the number of injured at about 140, after the shock, identified as a replica of the magnitude 9 earthquake of 11 March.
The earthquake occurred at 11:32 p.m. (2:32 p.m. GMT) at a depth of 49 km, according to the American Institute of Geophysics USGS. Its epicenter was located in the Pacific Ocean, 66 km east of the city of Sendai (Miyagi Prefecture).
An alert for a tsunami up to two meters high was lifted half past one later without there having been a reported abnormally high waves on the shore.
The Nuclear Safety Agency said no nuclear power station in the area had been damaged.Staff working on the site of the central hilly Fukushima Daiichi (No. 1) had been evacuated as a precaution to the interior.
Some 3.3 million homes were without power in the north-east, said the local power company, Tohoku Electric Power.
The giant earthquake and tsunami of 11 March killed more than 27,000 dead or missing, police said.
