The incident took place 5:15 p.m., said Western Mindanao Command (WMC) spokesperson Capt. Jo-ann Petinglay on Thursday.
The clash stemmed from ongoing focused military operations against the bandit group in Indanan town, of the said province.
Heavy fighting took place when troopers from the 2nd Scout Ranger Battalion flushed an undetermined number of ASG terrorists.
In the encounter, five bandits were killed and undetermined number wounded while 11 soldiers were slightly wounded by shrapnel.
Petinglay said all the wounded soldiers were promptly evacuated to Kuta Heneral Teodulfo Bautista Hospital and were immediately given medical attention.
“The Joint Task Force Sulu continues to intensify the conduct of offensives against the Abu Sayyaf to neutralize the bandits and ensure the safe rescue of the remaining hostages. All measures are being undertaken in accordance with the rules of engagement and with the support from the local government and the populace,” said WMC commander Major General Carlito G. Galvez, Jr.