A huge 7.3-magnitude earthquake has hit Fukushima, Japan, killing a man and injuring at least 69 others.
Terrified witnesses said buildings were left shaking after what felt like two quakes, with the second lasting for around two minutes.
A man in his 60s died after falling from the second floor of a building in Soma, Fukushima, during the tremor, according to the Fuji News Network.
NHK reports that at least 69 people have been injured in the quake, which happened at around 11.30pm local time.
Fukushima was hit by a major quake followed by a tsunami in 2011 that triggered a nuclear disaster.
The latest earthquake triggered a tsunami warning, however officials later said it only resulted in a 20cm wave.
Meanwhile, a Tohoku-Shinkansen bullet train carrying 100 people was reportedly derailed by the tremor, although no-one was injured.
Click here to follow our live blog on the earthquake as it develops
Parts of the Japanese capital have endured power outages as a result of the tremor, with reports suggesting two million people have been left without electricity.
A spokesperson for government organisation Japan Safe Travel said: "Tsunami Advisory has been issued on March 16, 11.39pm. A tsunami with an estimated height up to 1m is expected to strike the coastal regions of Miyagi/Fuckushima.
"Get out of the water and leave coastal regions immediately."
Officials later confirmed that a 20-centimetre wave had reached Ishinomaki port in Miyagi.
YouTuber Chris Broad wrote on Twitter: "Scariest earthquake in ten years.
"Had an actual panic attack & thought the whole bloody building was coming down. Started with a big one that died off.
"Then all of a sudden a 2nd massive one that knocked half the apartment over. Fire alarms going off all around Sendai right now."
Musician Shinya Mizoguchi wrote: "That was one of the longest earthquakes I’ve ever experienced. Hope everyone in Japan is safe."
Tepco, the company which operates the Fukushima Daiichi nuclear plant, said workers were checking for damage.
Fire alarms went off at the station and two water pumps were stopped.
However, it is understood that there are no abnormal radiation readings coming from the facility, according to the Tokyo Electric Power Company.
Prime Minister Fumio Kishida said the government was working to assess the extent of any damage after the tremor.
People in Japan are being warned that a similarly strong earthquake could strike again in the next week.
Chief Cabinet Secretary Hirokazu Matsuno said: “There is a possibility that another earthquake as strong as an upper 6 could strike in the next week or so.
“We need to be on alert.”
One witness posted on the European-Mediterranean Seismological Centre (ESMC) website: "Two one after another. Second was the strongest.
"Not too bad but in this area of Northern Tokyo it seemed to go on for a couple minutes."
Another wrote: "Felt very strongly in Kashima. Apartment was strongly swaying the entire time."
The tremor registered magnitude 7.3 and as high as a 6-plus on the Japanese shaking intensity scale in some areas - too strong for people to stand, according to public broadcaster NHK.
The US Embassy in Tokyo tweeted: "Around 11:36 PM a 7.3 earthquake struck northeastern Japan.
"A tsunami adivsory has been issued for Miyagi and Fukushima prefectures. Stay away from water. Power outages have been reported in multiple areas - including Tokyo. Rail travel may be disrupted. Continue to monitor news."
In 2011 a tsunami caused the failure of emergency generators as well as loss of power to circulating pumps at the nuclear plant.
As a result there were three nuclear meltdowns, three hydrogen explosions and radioactive contamination was released.
One death from caused by cancer was reported as a result of the disaster, and 16 people were seriously injured.
