MANILA - A taser flashlight was allegedly used to inflict injury on hazing victim Darwin Dormitorio, a freshman cadet of the Philippine Military Academy (PMA), police said Thursday.

The taser was "most likely" used to electrocute Dormitorio's private parts, according to Police Brig. Gen. Israel Ephraim Dickson, director of Police Regional Office-Cordillera.

It was surrendered by one of the 2 newly-identified suspects on the night of the cadet's death to PMA officials, Dickson said.

Investigation also revealed Dormitorio was kicked in the head, he added.

Dormitorio, 20, died Sep. 18 after complaining of stomach pain. He was hospitalized twice in the previous month and had bruises on his stomach consistent with hazing.

Baguio Police chief Allen Rae Co earlier identified 2 more upperclassmen of the victim, who had direct participation in his hazing.

• 2 more suspects identified in PMA cadet's hazing death

Police said it would file criminal charges against the five suspects, 3 of whom were earlier named: 3rd class Shalimar Imperial, 3rd class Felix Lumbag, and 1st class Axl Rey Sanupao.

Four other cadets were punished by the premier military school, which included suspension and demerit.

Baguio Police said it now has 14 witnesses help in its investigation into Dormitorio's death, 12 of which were PMA cadets while 2 were PMA staff.

The contents of their statement could not be disclosed to the public yet, police said.

PMA Superintendent Lt. Gen. Ronnie Evangelista on Wednesday announced his resignation over the cadet's death.

• PMA head steps down over cadet's hazing death

--Report from Michelle Soriano, ABS-CBN News