At least 58 people were injured Wednesday when an earthquake struck southern Japan, knocking down homes damaged by a previous quake that hit last month.

With a preliminary magnitude of 5.8, the latest earthquake hit at 6:11 a.m. local time and was followed by several smaller jolts.

It was centred about 14 km below the ocean, west of the city of Fukuoka on Kyushu island, Japan's Central Meteorological Agency said.

Most of the injuries were from falling objects or broken glass, said emergency officials. Two people are seriously injured, but none are in life-threatening condition.

As many as 279 buildings were damaged by the quake, which triggered a number of landslides.

Weakened by a March 20 earthquake, several homes on the island of Genkai collapsed. The earlier quake on the tiny island off the coast of Kyushu killed one person and injured hundreds.

Windows broke at Fukuoka Airport, about 900 km southwest of Tokyo, while a factory wall cracked in the town of Chikushi.

Police temporarily shut down highways, railways and the airport.

The agency said Wednesday's quake was considered an aftershock of the March 20 quake.