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.

Bangladesh elects ruling party veteran Alamgir as president
Russian strikes kill 16 in Ukraine's Kyiv
Prince Harry and Meghan to move back to Britain
North Korea launches 10 ballistic missiles as US-South Korea drills near end
Kenya tourist helicopter crash kills seven