An attack on a special Philippine army counter-terrorism unit on Friday has left three soldiers and two civilians dead.
Military officials added that nine soldiers were wounded in the attack.
Conflicting reports have emerged, with one claiming it was an explosion in front of the army camp that caused the deaths, while another blaming it on "two suicide bombers".
An investigation is underway to determine what happened, with officials holding the Abu Sayyaf terror group responsible for it.

No injuries reported after fallen drone debris hits six houses in Saudi Arabia
China confirms three ships passed through Strait of Hormuz
Three UN peacekeepers killed in Lebanon as Israeli strikes pummel south
Russian attacks kill two, injure dozens
Iran calls US peace proposals 'unrealistic', Trump issues new warning to Tehran
