Colonel Romeo Brawner, deputy commander of Task Group Ranao and military spokesperson in Marawi, said Juan was killed by an enemy sniper.
The young officer appeared in Rappler's video report "Final Push: Inside the Marawi battle area." At 4:32 in the report below, the young officer is seen in action inside the battle area, analyzing a map of the terrain.
He was a member of the Special Forces, an elite unit of the Philippine Army. He was reportedly expected to marry his girlfriend after the war.