An impeachment complaint was filed Thursday in the Philippine Congress against President Rodrigo Duterte, citing alleged involvement in extrajudicial killings in the government's drug war, graft and corruption as grounds for removing him from office.

Rep. Gary Alejano of the opposition Magdalo Party-List lodged the complaint against Duterte in the House of Representatives, a day after it went on a three-week break.

"According to the complaint that we filed, we believe that because of the crimes and the violations against our Constitution, the president has to be made accountable on the following basis," Alejano said, citing numerous grounds for the ouster.