A strong earthquake struck off the south of Puerto Rico early Tuesday, the US Geological Survey said, the latest in a series of tremors that have shaken the island since December 28.

A 5.8-magnitude earthquake with a depth of 8 kilometers jolted northeastern Iran on Thursday, according to state television reports. The earthquake jolted the town of Sangan near the border with Afghanistan. There were no immediate reports of casualties or damages.

An earthquake struck Iran on Friday less than 50 kilometres (30 miles) from the country's only nuclear power plant in the southwest, monitors said.

A strong earthquake hit the southern Philippine island of Mindanao on Sunday, geologists said, causing damage and injuries in an area still recovering from a string of deadly quakes in October.

A 4.5 magnitude earthquake hit the central Italian region of Mugello on Monday, sending panicked residents into the streets but causing minimal damage to buildings.

The death toll from a powerful Albanian earthquake rose to 50 as the search for survivors was called off, Prime Minister Edi Rama said Saturday.

The death toll from the most powerful earthquake to strike Albania in decades rose to 40 on Thursday, after 10 more bodies were pulled from the rubble overnight, the defence ministry said.

Albania was in national mourning Wednesday as emergency workers continued to pull bodies from the ruins of buildings gutted by a violent earthquake, with nearly 30 found dead and hundreds injured.

A 6.4 magnitude earthquake struck Albania early Tuesday killing four people, according to officials and local media, and sparking panic in the capital Tirana and other cities.

An unusually strong earthquake hit southeastern France on Monday, injuring four people, one of them seriously, authorities said.

A night-time earthquake in northwestern Iran on Friday killed five people and injured 120, according to early reports on state television.

A powerful earthquake struck the southern Philippines Tuesday, crushing two people under debris, cracking buildings and injuring dozens in a region still reeling from a previous deadly tremor.