Beijing, Shawwal 27, 1436, Aug 12, 2015, SPA -- A massive explosion rocked Tianjin, a major port city in north-eastern China, Chinese state-run news agency Xinhua reported late Wednesday, dpa reported. Xinhua reported that residents fleeing their homes "feared an earthquake." The cause of the blast and any casualties were unknown, the agency said. -- SPA 22:21 LOCAL TIME 19:21 GMT www.spa.gov.sa/w