Resigned Bureau of Customs (BOC) Commissioner Nicanor Faeldon has filed an ethics complaint against Senator Antonio Trillanes.
The case is based on the statements made by Trillanes to the media that Faeldon was supposedly at the heart of the drug controversy in the Customs bureau.
Faeldon described Trillanes' alleged personal attacks against him as vicious.
"You can't just blurt out lies to destroy people," he said in a brief news conference.
Faeldon left his detention cell at the Office of the Senate Sergeant-at-Arms located at the ground floor of the Senate building on Monday morning to file the complaint at the third floor where the Senate Ethics office is located.
The submission of the 14-page complaint took only about 15 minutes.
Faeldon previously filed a separate ethics case against Senator Panfilo Lacson after the lawmaker linked him to the corruption activities at the BOC.