A moderate earthquake jolted Quetta valley on Monday but there were no immediate reports of casualties or damage, officials said. The quake measuring 5.1 on the Richter scale was felt at 9:14 am in Quetta, Balochistan, a seismological department official, Mohammad Sajid told AFP. The epicentre of the earthquake was located about 110 km north of Quetta, near Muslim Bagh town, Sajid said. "There are no reports of any casualties or property losses so far," he said.