OAXACA, Mexico, Rabi'I 7, 1437, Dec 18, 2015, SPA -- Southern Mexico was rattled by a magnitude-6.4 quake, but there were no immediate reports of damage. The temblor, which took place yesterday, was felt in the southern states of Oaxaca, Chiapas, and Tabasco and it prompted some tourists and residents to rush out of buildings in the colonial city of Oaxaca, according to AP. The U.S. Geological Survey initially reported a magnitude of 6.6 for the quake, but later modified the calculation to 6.4. The temblor struck just before 2 p.m. local time (2000 GMT) in an area of Chiapas near the Guatemalan border. Civil Defense director Ricardo de la Cruz told local media some people suffered panic attacks, but there were no immediate reports of damages or injuries. -- SPA 09:59 LOCAL TIME 06:59 GMT www.spa.gov.sa/w