Marcos, for his part, has said he does not support her impeachment but has no power over the legislative branch.
A representative of Duterte did not immediately respond to a request for comment on the endorsement of the impeachment complaint.
Duterte becomes the fourth official in the Philippines to be impeached, following ex-President Joseph Estrada, an ombudsman and a former Supreme Court chief justice.
Grounds for impeachment of a top officials in the Philippines include culpable violation of the constitution, treason, bribery, graft and corruption, other high crimes, or betrayal of public trust.
ABS-CBN News posted a statement on X attributed to her brother, Davao congressman Paolo Duterte, who said he was “appalled and enraged by the desperate and politically motivated efforts to railroad” the impeachment.
“Mark my words: this reckless abuse of power will not end in their favour,” it quoted him as saying.
