Bangkok, Rabi'I 09, 1437, December 20, 2015, SPA -- At least 12 people are dead after a tourist bus crashed into a ravine in northern Thailand, police said Sunday, according to dpa. The bus was traveling a mountainous route between Chiang Mai and Chiang Rai when it lost control and tumbled down a ravine. "Twelve Chinese nationals were killed instantly and 13 more are seriously injured," said a police officer at the scene. Police say they are investigating the cause of the accident, but noted that the area was known for blind turns on mountain passes. --SPA 13:13 LOCAL TIME 10:13 GMT www.spa.gov.sa/w