MANILA, Philippines—(UPDATE) The National Bureau of Investigation on Thursday filed four criminal cases against cosmetic surgeon Vicki Belo and two other doctors for the alleged botched butt enhancement procedures on a 40-year-old businesswoman.

Charges of estafa (fraud), reckless imprudence resulting in injury, and violations of the Consumer Act and the Revenue Code were filed against Belo, and fellow physicians Rolando Cayetano and Francis Decangchon before the Quezon City Prosecutor’s Office.

This comes as the alleged victim, Josefina Norcio, said she was considering filing a more severe case of frustrated homicide against the three after laboratory examinations made by the NBI showed that the hydrogel used in the cosmetic procedures on Norcio contains acrolein—considered as a severe pulmonary irritant and lachrymatory agent that was used as a chemical weapon during World War I.

“I’m really mad on learning the laboratory report, which shows there’s poison in the hydrogel that they used in the procedure,” said Norcio, owner of a production company sending entertainers abroad. “I think they really want me to die.”

Norcio, hoping to have similar round buttocks of actress Rosanna Roces, underwent butt augmentation in 2003 and 2005 at Belo’s clinic. The procedures cost her around P250,000.

But years later, she began to experience pain, she couldn’t move her lower body, and her buttocks were inflamed. Her condition worsened as she experienced difficulty in breathing and her blood pressure became erratic.

Subsequent medical checkups showed her buttocks were full of pus, a condition linked to implanted hydrogel.

The NBI investigation showed Belo, Cayetano and Decangchon are not surgeons—Decangchon is a gynecologist while Belo and Cayetano are general practitioners. At the same time, it said the three have not undergone the trainings required by the Philippine Association of Plastic, Reconstructive and Aesthetic Surgeons.

The Belo Medical Clinic meanwhile is also facing a complaint for violation of the National Internal Revenue Code.

Norcio’s counsel, Trixie Angeles, said Belo’s lawyer Adel Tamano had admitted that Belo’s had performed around 600 hydrogel procedures.

“If such procedure like what has been done to Ms Norcio costs P100,000, with the 600 similar procedures done, there is under reporting of income,” she said.