MANILA (UPDATE) - Two more upperclassmen of Philippine Military Academy (PMA) cadet Darwin Dormitorio were identified as suspects in his hazing death, police said Thursday.

Baguio Police chief Allen Rae Co, however, refused to identify the 3rd class cadets yet as police are still waiting for the sworn statement of 14 witnesses.

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

• PMA cadet died due to hazing – PNP

Police said it would file criminal charges against the cadets for their direct participation in Dormitorio's hazing. They earlier identified 3rd class Shalimar Imperial, 3rd class Felix Lumbag, and 1st class Axl Rey Sanupao as suspects.

Authorities also presented a taser flashlight believed to have been used to inflict injury on Dormitorio. It was surrendered by one of the newly-identified suspects on the night of the cadet's death, police said.

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.

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

PMA Superintendent Lt. Gen. Ronnie Evangelista earlier announced his resignation following Dormitorio's death.

• PMA head steps down over cadet's hazing death

--Report from Zhander Cayabyab and Michelle Soriano, ABS-CBN News