From the Christian Science Monitor

A strong magnitude-7.3 earthquake struck off the coast of El Salvador followed an hour later by a magnitude-5.4 aftershock, authorities said early Monday. There were no immediate reports of damages or injuries.

A tsunami warning was put into effect for Costa Rica, Nicaragua, El Salvador, Honduras, Guatemala, Panama and Mexico after the quake struck at 10:37 p.m. Sunday. The warning was later rescinded.

David Walsh, an oceanographer with the Pacific Tsunami Center in Ewa Beach, Hawaii, said a minor, 10-centimeter (3.94-inche) tsunami was registered off Acajutla, El Salvador.

The quake was located 86 miles (138 kilometers) south-southwest of San Miguel, the U.S. Geological Survey reported on its web site. The temblor took place at a depth of 32.9 miles (53 kilometers). The second quake registered about an hour later in the same area at a depth of 35.9 miles (57.8 km).