Updated

The military says four soldiers have been killed in an attack on their post in southern Thailand by at least 20 armed men.

Lt. Col. Thanit Saengchan says six other soldiers were wounded in the attack Wednesday evening on the army unit in Narathiwat province's Ra-ngae district.

The attack came two days after a visit to the restive south by Prime Minister Abhisit Vejjajiva, who vowed his government's dedication to ending a seven-year Islamist insurgency in Thailand's three southernmost provinces. More than 4,300 people have been killed in the insurgency since January 2004.

Wednesday's attackers also set fire to two shelters in the base and took away an unknown number of M16 assault rifles.