Manila, Aug. 20 -- Police investigators are looking into digital evidence to establish how the shooting incident at the Ateneo de Zamboanga University Junior High School campus on Aug. 18 was broadcast online and the minor suspect's motive.

Philippine National Police (PNP) chief Gen. Jose Melencio Nartatez Jr. said police recovered a cellphone and other personal effects from the Grade 8 student who opened fire inside the school premises, killing one student and injuring several others before taking his own life.

"We will examine the cellphone and other digital evidence carefully and will not conclude until the investigation is completed. The PNP is looking into whether there were prior incidents, threats, or warning signs involving the ...