Police said John Mark was inside their house, along with his father Dominador Fontanilla, 50, in District 4, Cuyapo, Nueva Ecija when two unidentified suspects barged in and fired their guns several times.
The father, a sales agent, was included in the local police drug watchlist and an alleged member of Quinto robbery and gun-for-hire gang, said PO3 Larry Tesado, investigator. Investigation showed the older Fontanilla died instantly due to multiple gunshot wounds from .45 pistol.
John Mark was declared dead upon arrival at a district hospital in nearby town of Guimba.
Police said follow up investigation is being conducted for possible identification of the suspects.