A magnitude 4.6 earthquake hit southern Gunma, an inland prefecture north of Tokyo, on Sunday, causing some property damage but no reports of injuries have been confirmed.

The 3:27 p.m. quake, which occurred at a depth of 14 kilometers and posed no tsunami risk, registered lower 5 on the Japanese seismic intensity scale of 7 in Shibukawa in the prefecture, the Japan Meteorological Agency said.

The quake broke windows at a gas station in Shibukawa. A worker at the gas station said he felt a vertical impact from below the ground at the time of the quake.

The operation of bullet trains running through the prefecture was suspended following the quake but was resumed shortly afterward after no safety problems were detected.

No abnormality was found at Japan Atomic Power Co.'s inactive Tokai No. 2 nuclear power plant in the village of Tokai in Ibaraki Prefecture, according to the prefectural government. The quake recorded 3 on the Japanese scale in parts of the prefecture.

The government set up a liaison unit at the crisis management center of the prime minister's office to gather information on the temblor.