MANILA- Citing strong evidence, former Senator Ramon "Bong" Revilla Jr. should be convicted of plunder over his alleged involvement in the multibillion-peso "pork barrel" scam, former Ombudsman Conchita Carpio Morales said Thursday.

Morales, who initiated the case against Revilla, said evidence gathered against the former action star should be enough to convict him over his alleged involvement in the Priority Development Assistance Fund (PDAF) scam.

"I am not going to attend the promulgation. Given the evidence the office gathered, if I were a judge, I would convict him. Period," Morales, also a former justice of the Supreme Court, said in a statement.

The Sandiganbayan is expected to rule on Revilla's plunder case on Friday, 4 years since the case was filed.

• Sandiganbayan ends Revilla plunder trial

Morales was the country's top graft-buster when the Office of the Ombudsman filed plunder and graft cases against Revilla and former Senators Juan Ponce Enrile, and Jinggoy Estrada over the PDAF scam.

The three allegedly received kickbacks from alleged scam mastermind, businesswoman Janet Lim Napoles in exchange for funneling part of their discretionary funds to bogus non-government organizations.

Revilla was accused of embezzling P224 million in his discretionary funds. He, however, denied the accusation.

"I never received money from Janet Lim Napoles at sa mga kasamahan niya (and her colleagues),” Revilla said during one of the trials of his plunder case.

• Revilla denies amassing P224 million from PDAF scam

He remains in detention at the Police Custodial Center in Camp Crame.

-report from Adrian Ayalin, ABS-CBN News