Guatemala ? With food and water running out, governments in Central America and Mexico scrambled Friday to reach isolated areas devastated by a week of intense rain, with residents saying panic was starting to grow among survivors.

Mudslides and flooding exacerbated by Hurricane Stan killed 258 people across the region, with Guatemala bearing the brunt of the damage and deaths.

Increasing fears Friday was a strong earthquake that shuddered through Guatemala and El Salvador. The quake caused a rain-damaged highway bridge to collapse in Guatemala and sent thousands of frightened Salvadoran residents into the streets.

There were no immediate reports of injuries from the quake, with a preliminary magnitude of 5.8. Telephone service was cut off briefly in some areas of El Salvador, and Interior Minister Rene Figueroa urged residents to obey evacuation orders for high-risk areas.

The quake also forced officials to suspend their search for two coffee workers missing since Saturday when the Ilamatepec volcano erupted about 40 miles west of the capital, San Salvador.