Earthquake rocks northern Greek port city of Thessaloniki

Tremors jolt residents, cause power outages and building damage

No immediate reports of casualties, authorities say

THESSALONIKI, Greece - A strong earthquake struck the northern Greek city of Thessaloniki on Tuesday, causing power outages and building damage but no immediate reports of casualties, authorities said.

The US Geological Survey measured the quake at magnitude 5.3, while the Geodynamic Institute of the National Observatory of Athens put it at 5.6.

The quake struck at 11:56 a.m. local time (0956 GMT) and was centered about 23 kilometers (14 miles) northwest of Thessaloniki, Greece's second-largest city, at a depth of 10 kilometers (6 miles).

The quake was felt across northern Greece, including the neighboring region of Central Macedonia.

Residents reported feeling strong tremors that shook buildings and caused objects to fall off shelves.

Power outages were reported in several areas of the city, and there were also reports of building damage, including cracks in walls and fallen ceiling tiles.

Firefighters and emergency crews were dispatched to the affected areas to assess the damage and help residents.

There were no immediate reports of any injuries or deaths, but authorities warned that the situation was still being assessed.