A 5.3-magnitude earthquake struck off the Solomon Islands early Thursday, U.S. geologists said.

The U.S. Geological Survey said the tremor, at a depth of 43 kilometers (27 miles), struck off the southwest coast of the main Guadalcanal Island at 3:56 am local time (16:56 GMT).

Solomon Islands police were out in force on the streets of the capital Honiara on Monday after rioting among the victims of recent devastating floods, authorities said.

Deputy Police Commissioner Juanita Matanga called for calm and advised citizens to stay at home amid fears of renewed violence in the impoverished city.

The death toll from flash floods in the Solomon Islands climbed to 23 on Tuesday, officials said, as aid agencies scrambled to distribute supplies to thousands left homeless by the disaster.

Health kits were being handed out to 10,000 people sheltering in evacuation centers in the capital Honiara in a bid to prevent disease outbreaks, the UN Office for the Coordination of Humanitarian Affairs (OCHA) said.

A strong 6.0-magnitude earthquake struck the Solomon Islands on Friday, the U.S. Geological Survey said, but there were no immediate reports of damage.

The tremor, at a depth of 63 kilometers (39 miles), hit at 10.40 pm (1140 GMT), some 30 kilometers west of the city of Kirakira.

Flash flooding killed at least six people and left 10,500 homeless in the Solomon Islands' capital Honiara on Friday, with another 30 missing and the death toll set to rise, officials said.

The government declared a state of emergency after the city's main river, the Matanikau, burst its banks late Thursday, sweeping away entire communities, bringing down bridges and inundating the downtown area.

A strong 6.1-magnitude earthquake struck off the Solomon Islands on Friday, the U.S. Geological Survey said, but there was no immediate tsunami warning issued.

The tremor, at a depth of 72 kilometers (45 miles), hit at 4.16 am local time (17:16 GMT Thursday) 81 km south of the town of Panguna in Papua New Guinea.

A 6.1-magnitude earthquake struck off the Solomon Islands on Wednesday, the U.S. Geological Survey said, but there was no immediate tsunami warning issued.

The tremor, at a depth of 64 kilometers (39 miles), hit in the Santa Cruz Islands, some 89 kilometers south of the remote town of Lata, where a tsunami left at least 10 people dead in February.

A 5.5-magnitude quake struck in a remote area off the Solomon Islands early Sunday.

The U.S. Geological Survey said the tremor, at a depth of 70 kilometers (43 miles), struck in the Solomon Sea at 3:32 am local time (17:32 GMT Saturday) about 84 kilometers southwest of Chirovanga.

Relief supplies began trickling into tsunami-hit communities in the Solomons Islands Monday, as another powerful aftershock rattled the Pacific nation in the wake of last week's 8.0-magnitude earthquake.

The aftershocks had slowed but not halted aid operations in the remote Santa Cruz islands, where at least 10 people died in the tsunami triggered by the quake last Wednesday, the Red Cross said.

A huge aftershock rocked the Solomon Islands on Friday, sending villagers fleeing to higher ground two days after an 8.0-magnitude quake and tsunami which left 13 people dead and many more missing.

The 6.8-magnitude tremor was one of the strongest in a series of aftershocks that have been hampering relief efforts on remote Ndende island in the eastern Solomons, where Wednesday's tsunami inundated some 20 villages and left thousands homeless.