Manila, Aug. 18 -- Four people were killed and nine others injured in a shooting incident at the Ateneo de Zamboanga University in southern Philippines on Tuesday, according to the National Bureau of Investigation (NBI) in the region, the Manila Times reported.

As per the news report, the victims included two security guards and two high school students, including the suspected shooter, whose identities have been withheld.

The shooter was identified as a male fourth-year high school student whose father reportedly worked at the Zamboanga City Customs Office. He was armed with a Glock 9-millimetre assault rifle (M16).

The Department of Education said it was "gravely concerned" over the shooting and stood with the Ateneo de Zamboanga com...