Ex-mayor Abner Afuang pours water on Hayden Kho during Senate committee hearing, May 28, 2009

A Senate joint committee probe on the Hayden Kho sex videos was disrupted Thursday after a man wearing a press ID poured water on the embattled celebrity doctor.

Footage showed the man pouring water on Kho from a water bottle before Senate guards could stop him. A Senate security official said the culprit is a former policeman who had just slipped into the session hall.

The incident occurred just minutes after Kho and actress Katrina Halili entered the session hall.

Information gathered by ABS-CBN identified the man as Abner Afuang, a former mayor of Pagsanjan, Laguna.

Sen. Maria Ana Consuelo Madrigal, chairwoman of the Senate Committe on Youth, Women and Family Relations, said the man should be arrested and charges filed against him for disrupting the hearing. She warned that she would be forced to rule that the Senate hearing be held in executive session if similar disruptions occur.

Senators on Thursday agreed to conduct a public hearing on the sex video probe involving cosmetic surgeon Hayden Kho despite the latter's request to conduct the hearing in executive session.

Sen. Maria Ana Consuelo Madrigal, chairwoman of the Senate Committe on Youth, Women and Family Relations, agreed to conduct the hearing publicly upon the request of actress Katrina Halili, one of the women involved in the scandal.

Senators Ramon Revilla Jr. and Jose "Jinggoy" Estrada concurred with Madrigal's decision.

Lawyer Raymund Palad said his client, Halili, agreed to waive her right to privacy and conduct the hearing publicly since she had already given numerous media interviews about the issue.

Kho's lawyer, Lorna Kapunan, said conducting the hearing publicly would not aid the Senate investigation to draft new legislation on the matter of the sex videos.

Revilla earlier called for a Senate investigation on Kho after accusing the celebrity doctor of making at least 40 videos of his sexual trysts with various women including actress Katrina Halili. Several of the videos have spread virally on the Internet through various file-sharing sites.

Kho has publicly apologized for making the videos but said he was not responsible for putting the videos online.

Senate President Juan Ponce Enrile earlier said the joint Senate committee probe will focus on passing new legislation that will impose heavy penalties on video voyeurs to prevent a repeat of the Hayden Kho sex video scandal.

"We may need a need law to prevent this from happening again. Also, [Kho] said he was given drugs. My question is -- was he given drugs in all of the videos? Was it all done while in the influence of drugs? This is the type of question that I would like to ask him," Enrile told reporters.

Earlier, Kho’s camp threatened to walk out of the hearing if the Senate would not grant its request, triggering a heated argument between Estrada and Kapunan.