SANTIAGO, Chile - A 6.2-magnitude earthquake hit northern Chile on Friday, one month after a massive quake devastated the country's south central region, though officials reported no immediate victims or damage.

The quake struck at 10:52 am (1452 GMT) 605 kilometers (375 miles) north of Santiago and 80 kilometers (50 miles) southwest of the town of Copiapo, the US Geological Survey reported. The quake had a depth of 21.7 miles (35 kilometers).

Hundreds of people in the region fled offices and schools, local media reported, adding that the quake was strong enough to activate car alarms.

Residents of the port of Caldera evacuated on fears of a tsunami wave, even though the government emergency office did not issue a tsunami warning, Radio Cooperativa reported.

An 8.8-magnitude quake, one of the most powerful on record, struck along the coast south of Santiago on February 27, causing widespread death and destruction.

There have been more than 400 aftershocks from the February quake, though the Friday quake was not an aftershock as it happened along a different fault line, Chilean seismologists said.

The quake and the powerful tsunami waves that followed killed at least 452 people and caused some 30 billion dollars in damage. Nearly 100 people are still missing.

Separately, military commanders in the southern city of Concepcion, Chile's second most populous city, lifted a nighttime curfew they imposed to halt widespread looting that broke out after the February 27 quake.

Army General Guillermo Ramirez, in charge of forces in the region, said that soldiers will continue to provide security in the region.

Concepcion, with a population of half a million, and the coastal town of Constitucion suffered the heaviest damage in the February quake.