SYDNEY, Rajab 10, 1437, April 17, 2016, SPA -- An magnitude 6.1 earthquake struck southeast of the Pacific island nation of Tonga on Sunday, Reuters cited the US Geological Survey as saying. The quake hit 277 kms (172.12 miles) south-southeast of the capital Nuku'alofa at a depth of 66 kms, the USGS said. --SPA 13:22 LOCAL TIME 10:22 GMT www.spa.gov.sa/w