The third measure, Alvarez said, is to recommend the issuance of a warrant of arrest, which Congress is still mulling on.
"Definitely we will be filing a complaint with the (Senate) Ethics committee, and maybe definitely a disbarment case with the Supreme Court," Alvarez said.
Alvarez said that he would make a final decision on this after the recommendation of the House Justice committee.
He added that they would have to wait and see, citing that De Lima "is a (scheming) person" and "a serial liar."
A fourth option: a case of "obstruction of justice" before a regional trial court – was also mentioned in House press release on Monday.
De Lima is in hot water with the congressmen after her ex-driver Ronnie Dayan told a House probe that the senator urged him to skip the Bilibid drug trade hearings.
"Pinoportray niya yung sarili niya as (a) graft-buster, crime-buster, talagang malinis. How do you demolish her credibility?" said Alvarez. "Dapat palabasin mo yung what kind of a person is she? Kailangan malaman yan ng sambayanan."
He also suggested that De Lima was liable for sexual harassment, and her relationship with subordinates was inappropriate.
"Ginagamit niya yung subordinates niya," he said. "Kung lalaki yung gumawa nun, doon sa mga subordinates mo, definitely sexual harassment (iyan). Eto siya babae."