Tianjin, Safar 7, 1436, Nov 29, 2014, SPA -- Four people died after a minibus plunged into a river due to limited visibility caused by heavy fog in the northern port city of Tianjin on Saturday morning, local authorities said. The accident happened at about 6:07 a.m. in Xiqing District, according to police. Three people in the minibus, including the driver, escaped but four were trapped and died. The cause of the accident is being investigated, Xinhua reported. --SPA 14:16 LOCAL TIME 11:16 GMT www.spa.gov.sa/w