MANILA - Senator Richard Gordon on Thursday opened what he said would be the final legislative hearing into an alleged P50 million bribery-extortion case involving gambling mogul Jack Lam.

Gordon, chair of the Senate Blue Ribbon Committee, warned Immigration officials embroiled in the scandal that the hearing would be their last opportunity to "tell the truth."

"When we adjourn this hearing and submit a committee report, I am not going to schedule another hearing just to hear more lies," he said.

"This is your last chance to tell the truth. This is an opportunity for you to explain your positions."

BI deputy commissioners Michael Robles and Al Argosino are accused of accepting P50 million from Lam in exchange for the release of over 1,300 supposedly undocumented workers arrested in the Macau-based businessman's online gambling casino.

Robles and Argosino have insisted they accepted the money as part of a covert corruption probe against Lam.

But Lam's representative, retired police officer Wally Sombero, has claimed that the 2 officials extorted the amount.

The Senate Blue Ribbon panel may recommend tougher gaming regulations to prevent a repeat of the scandal, Gordon said.

He added that he is looking into increasing penalties for perjury and violations of immigration laws.