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MANILA - The Philippine Military Academy (PMA) said Sunday it would file administrative and criminal charges for those liable in the death of hazing victim Darwin Dormitorio last week.

Dormitorio, 20, had bruises on his stomach consistent with hazing, according to the Philippine National Police (PNP).

• PMA cadet died due to hazing – PNP

"The PNP investigation has already concluded that it is maltreatment. The PMA is ready to file appropriate charges, administrative and criminal charges to those who are involved," PMA spokesperson Maj. Ray Afan told ANC.

Afan said the PMA will leave "no stone unturned" in its investigation into the cadet's death.

"All the administrative lapses... will be reviewed for this not to happen again," he said. "We have also directed all persons involved to directly coordinate and cooperate with the respective investigations."

The academy does not condone maltreatment among its ranks, Afan stressed.

"Even before this incident happened it was already in the policy and regulations of PMA that maltreatment is and shall never be a part of training," he said.

"The mission of the academy is to instruct, train and develop cadets. Maltreatment does not instruct, train, nor develop cadets into the right officers, young forces that the Filipino people will need in the future."

The military has said it has ordered a "thorough and speedy" investigation into Dormitorio's death, while the PNP has also launched a parallel probe.

• Military orders 'speedy, thorough' probe into PMA cadet's death

Hazing incidents and frat-related violence have been plaguing the country’s premier military training institution and other law schools, some of which resulted in deaths.

President Rodrigo Duterte last year signed a stronger anti-hazing law, in response to the hazing death of University of Santo Tomas law freshman Horacio Castillo III.