A powerful earthquake struck Osaka and neighboring prefectures on June 18, killing at least three people and injuring more than 300, along with disrupting morning train services and knocking out power in a widespread area.

The quake, which hit at 7:58 a.m., registered a lower 6 on the Japanese seismic intensity scale of 7 in northern Osaka Prefecture and an upper 5 in southern Kyoto Prefecture, according to the Meteorological Agency.

It was the first time that an earthquake recorded a lower 6 in Osaka Prefecture.

The magnitude is estimated at 6.1.

A 9-year-old girl died in Takatsuki, Osaka Prefecture, after the walls beside an elementary school swimming pool fell on her.

An 80-year-old man was killed in Osaka's Higashi-Yodogawa Ward after a wall of a house collapsed on him, while an 85-year-old man died in Ibaraki, Osaka Prefecture, after a bookshelf fell on him at his home.

According to the internal affairs ministry, 307 injuries were reported in Osaka, Kyoto and four other prefectures as of 5 p.m.

The earthquake registered a lower 5 in southern Shiga Prefecture, southeastern Hyogo Prefecture and Nara Prefecture. An intensity of 1 or stronger was observed in wide areas from the Kanto region to part of Kyushu.

Service on the Sanyo Shinkansen Line was suspended due to a power outage between Shin-Osaka and Okayama stations but resumed around 3 p.m. According to West Japan Railway Co., part of the conventional railway lines remains suspended.

According to Osaka Gas Co., about 110,000 households are without gas service in Osaka Prefecture, mostly in the cities of Ibaraki and Takatsuki. Service is not expected to be fully restored until June 26 to June 30.

According to Kansai Electric Power Co., power was cut to about 170,320 households, mostly in Osaka Prefecture, as of 9 a.m. Power was restored to all areas by 11 a.m.

No abnormalities have been reported at 15 nuclear reactors in Fukui Prefecture. No tsunami is expected, according to the agency.