Clashes between Thai and Cambodian troops at their disputed border have killed at least 12 people, Thai authorities say.
Most of the casualties were civilians from three Thai provinces, according to Thailand's army, which also reported that several people were wounded.
It escalated quickly, with Thailand accusing Cambodia of firing rockets and Bangkok carrying out air strikes on Cambodian military targets.
Both countries have asked their citizens near the border to leave the areas, with Thailand evacuating 40,000 civilians to safer locations.
We're in the middle of evacuating," Sutian Phiwchan, a local resident of Ban Dan district in Thailand's Buriram province near the Cambodian border, told the BBC.
Thailand claims that it began with Cambodia's military deploying drones to conduct surveillance of Thai troops near the border.
Cambodia says Thai soldiers initiated the conflict when they violated a prior agreement by advancing on a Khmer-Hindu temple near the border. »