In a CNN Philippines exclusive, House Speaker Pantaleon "Bebot" Alvarez said on Friday, he is studying the possibility of filing an impeachment complaint against Robredo.
"Pinagaaralan ko pa rin... Kung sa aking pag-aaral ay meron akong sapat na ebidensiya para i-prosecute 'yan, we have to see if it can stand trial sa Senado," Alvarez said.
Robredo recently sent a video to the United Nations Commission on Narcotic Drugs criticizing the government's anti-drug campaign.
Alvarez believes, Robredo's pronouncements before an international audience betrayed public trust. This is an impeachable offense under the 1987 Philippine Constitution.
"Ang pananaw ko dito mayroong betrayal of public trust... Sa buong buhay ko, ngayon lang ako nakakita ng isang mataas na opisyal ng gobyerno na walang pakundangan siraan ang ating bansa sa international community... Ano ang magiging epekto noon economically?" he said.
Robredo has been a vocal critic of Duterte's war on drugs and the allegedly state-sponsored extrajudicial killings in the country.
In a statement, Presidential Spokesperson Ernesto Abella said the international release of Robredo's video and the filing of the impeachment complaint against President Rodrigo Duterte — which both happened on Thursday — seems too perfectly aligned to be considered a coincidence.
"If it is not her personal intent, she may have played into the hands of those who wish to use her as a political animal. Either way it is a pathetic state of affairs for her," he said.
Magdalo party-list Representative Gary Alejano filed the first impeachment complaint against Duterte based on the following grounds:
Culpable violation of the Constitution
Engaging in bribery
Betrayal of public trust
Graft and corruption
Other high crimes
The impeachment complaint is based on allegations of illegal acts supposedly committed by Duterte both as President and as then mayor of Davao City.
Alejano said Duterte is "not fit to serve as President" and "should be held liable for the crimes he committed."
As for House Speaker Alvarez, he believes Robredo is behind the impeachment complaint against the President.
"Sa tingin ko nagmamadali ito upang siya ay maluklok sa diyan sa pwesto ni Pangulong Duterte dahil mukhang natatakot siya na pagbibigyan ang petisyon na bilangin ang mga balota noong nakaraang eleksyon," he said.
President Duterte has said he does not think Robredo is behind the supposed destabilization plot against him.
WATCH THE VIDEO HERE: