LOS ANGELES—Damage reports from the U.S.-Mexico border region are growing after a magnitude-7.2 earthquake in Baja California that was felt from Tijuana and Los Angeles to Las Vegas and Phoenix.

The quake struck south of Mexicali, Mexico, at 3:40 p.m. Sunday, but damage also was being reported north of the border.

Calexico Fire Chief Peter Mercado tells KABC-TV in Los Angeles that there is substantial damage in the older section of the southeastern California city. Mercado says there is structural damage and broken windows, leaking gas lines and damage to the water system. But he says no injuries have been reported.

Across the border, a parking structure at the Mexicali city hall has collapsed. Mexicali is a bustling

This image released by the U.S. Geological Survey shows a shake map of the Calexico, Calif. region on Sunday April 4, 2010. A strong earthquake south of the U.S.-Mexico border Sunday swayed high-rises in downtown Los Angeles and San Diego and was felt across Southern California and Arizona, knocking out power and breaking pipes in some areas but causing no major damage. The 7.2-magnitude quake struck at 3:40 p.m. in Baja California, Mexico, about 19 miles southeast of Mexicali, according to the U.S. Geological Survey. ((AP Photo/U.S. Geological Survey))
commerce center where trucks carrying goods cross into California.

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