Photo/Illutration A map displaying the Japanese intensity scale of 7 shows the recorded intensity of the earthquake occurring at 4:16 a.m. on May 11. (Provided by the Japan Meteorological Agency)

A strong earthquake jolted the greater Tokyo area at around 4:16 a.m. on May 11 while most people were still in bed, resulting in several minor injuries. 

The earthquake originated in southern Chiba Prefecture. Officials estimate the magnitude 5.2 quake occurred at a depth of around 40 kilometers.

Kisarazu city in the prefecture saw tremors of an upper 5 based on the Japanese intensity scale of 7, and lower 5 jolts were logged in Kimitsu city in the prefecture, according to the Japan Meteorological Agency.

Tremors measuring at least a 4 on the Japanese scale were recorded in Tokyo’s 23 wards and Yokohama. 

JMA officials are calling on people in the area to brace for aftershocks with a maximum intensity of an upper 5 over the next week or so.

As government officials in the area were collecting damage information in the aftermath of the quake, several minor injuries were reported.

A 72-year-old woman injured her right shoulder after falling while trying to flee from her home in Kimitsu, according to the city fire defense headquarters.

An 80-year-old woman fell down the stairs in her home in Ichihara, Chiba Prefecture, and suffered a minor injury, the city fire department reported. 

A 64-year-old woman injured her right hand after falling in her home in Yokohama, according to the Kanagawa prefectural government.

A man in his 50s suffered a minor injury when a light fell on his head while he was sleeping at his home in Kawasaki, Kanagawa Prefecture, according to the city government.

The JMA said there was no threat of tsunami from the quake.

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