The U.S. Geological Survey says two earthquakes have rattled a desert area straddling the U.S.-Mexico border. There were no immediate reports of injuries or damage on the U.S. side, according to AP. The first quake struck Friday morning in an area about 16 miles (26 kilometers) south of the Mexican border town of Mexicali. Its magnitude was measured at 4.8. The second quake hit three minutes later about 5 miles (8 kilometers) farther south. It measured at 4.4. It's the second time this week the region has been shaken. On Tuesday, a magnitude 5.0 quake hit an area about 21 miles (34 kilometers) southeast of Mexicali. No injuries were reported in that temblor.