The quake was reported with a magnitude of 6.2 and happened at a depth of 48.2km (30 miles), monitors said.

The epicentre was close to the Pacific coast and 55km (35 miles) west of David, Panama's third-largest city and home to 125,000 people.

There have been no reports of any injuries of casualties, says the USGS.

People close to the quake contacted local radio stations in Panama to say they had felt strong aftershocks, reported Reuters.

The news agency also reported that the tremors were felt in the Costa Rican capital San Jose, but that authorities there had received no reports of damage.

BBC