Five Thai soldiers were killed in an attack on a military checkpoint in Narathiwat province in the country's restive south.
At least six civilians were also injured in the attack, including a 10-year-boy, local officials said.
Prime Minister Anutin Charnvirakul on Thursday called the attack a "brazen act of terrorism" that posed "a serious threat to national security."
What do we know about the attack?
The incident took place on Wednesday when around 10 people opened fire at the security checkpoint and threw pipe bombs at soldiers from the Thai Rangers auxiliary force, before fleeing the scene.
