Thailand's army says suspected Islamic insurgents set off a roadside bomb in the country's restive south, killing two Buddhist monks.

Army Maj. Gen. Akara Tiproj says two soldiers were also wounded in Monday's attack in the Muslim-dominated province of Yala.

More than 4,200 people have been killed in predominantly Buddhist Thailand's three Muslim-dominated southern provinces since an Islamist insurgency erupted here in 2004.