Updated

The U.S. Geological Survey says an earthquake with a preliminary magnitude of 6.6 has struck in the Pacific Ocean off the coast of western Panama.

The quake struck at 3:54 a.m. Monday, 12 miles (20 kilometers) off Punta de Burica, close to the border with Costa Rica. It was at a relatively shallow depth of 12.4 miles (20 kilometers).

The Pacific Tsunami Warning Center said there was no danger of a tsunami, and there were no immediate reports of damage.