Internal Security Operations Command (ISOC) Region 4 Front spokesman Col Pramote Phrom-in said the curfew was in effect in the areas near the military base in Narathiwat's Bacho district.
The areas under curfew are Barae Nue, Barae Tai, Balookasamoh and Kayohmati sub-districts in Narathiwat as well as Saithong and Don Sai in Pattani.
The curfew is aimed at helping the authorities track the assailants who were wounded in the assault, the spokesman said. For the safety of the public, the populace is banned from leaving home from 6am today until 6am tomorrow.
Over 30 insurgents dressed in camouflage-like security force uniforms attacked the military base at about 1am Wednesday.
Sixteen attackers were killed and no casualties were reported on the government side.
Sixteen assault rifles, a motorcycle and a pick-up truck were seized. The police believed that several wounded attackers still at large are attempting to flee.