Philippine President Rodrigo Duterte has acknowledged that allegations he induced extrajudicial killings in his war on drugs could be raised to the International Criminal Court (ICC) after an impeachment case failed in the House of Representatives.

“Yeah, he can go ahead. He is free to do it. This is a democracy,” Duterte said in reaction to a lawmaker saying he was considering bringing a case against the Philippine leader to the court in The Hague, Netherlands.

The impeachment complaint killed by a House committee Monday accused Duterte of multiple murders and crimes against humanity for adopting a state policy of inducing police and vigilantes into killing more than 8,000 suspected drug users and dealers outside the rule of law. The complaint also accused him of corruption, unexplained wealth, and taking a “defeatist stand” against China's in the territorial row in the South China Sea.

“It is true that there are deaths — is there a drug war where no one is killed?” Duterte said. “But not in the character and kind that I was dished out, including ordering the killing of a child.”

The dismissal of Rep. Gary Alejano's complaint was widely expected since the House is dominated by Duterte allies. But the president's critics hope the procedure could bolster a lawsuit filed against him by a Filipino lawyer before the ICC for alleged extrajudicial killings by showing that domestic efforts to stop Duterte have failed.

The dismissal of the complaint, filed in March, bars any new impeachment case against Duterte until next March.

Since taking office in June, Duterte's war on drugs has killed 7,000 to 9,000 suspected drug dealers and addicts, according to human rights groups. The government refutes that, releasing data on May 2 showing nearly 4,600 people have been killed in police anti-drug operations and homicides found to be drug-related.

During Monday's hearing, Rep. Rodolfo Farinas, the majority floor leader, asked Alejano repeatedly if he had personal knowledge of allegations he made in his complaint.

Alejano said he had no personal knowledge as a witness, but that he had personal knowledge as a complainant based on official records, affidavits of witnesses and Duterte's public pronouncements. Several lawmakers pointed to that distinction to say Alejano's allegations were hearsay.

Forty-two of 49 committee members then voted to declare the complaint insufficient in substance.

The most controversial quotes from Rodrigo Duterte Show all 9 1 /9 The most controversial quotes from Rodrigo Duterte The most controversial quotes from Rodrigo Duterte On killing drug addicts “These sons of whores are destroying our children. I warn you, don’t go into that, even if you’re a policeman, because I will really kill you. If you know of any addicts, go ahead and kill them yourself as getting their parents to do it would be too painful” The most controversial quotes from Rodrigo Duterte Message to China “I will go there on my own with a Jet Ski, bringing along with me a [Phillipino] flag and a pole, and once I disembark, I will plant the flag on the runway and tell the Chinese authorities, ‘Kill me’ ” AP The most controversial quotes from Rodrigo Duterte Christmas message to law-breakers “If you do not want to stop, and just continue committing crimes, then this would be your last Merry Christmas” AP The most controversial quotes from Rodrigo Duterte On sex life “I was separated from my wife. I’m not impotent. What am I supposed to do? Let this hang forever? When I take Viagra, it stands up” AFP/Getty Images The most controversial quotes from Rodrigo Duterte On the drugs trade “None of my children are into illegal drugs. But my order is, even if it is a member of my family, ‘kill him'" AP The most controversial quotes from Rodrigo Duterte Insulting the Pope “We were affected by the traffic. It took us five hours. I asked why, they said it was closed. I asked who is coming. They answered, the pope. I wanted to call him: ‘Pope, son of a wh**e, go home. Do not visit us again’” AFP/Getty Images The most controversial quotes from Rodrigo Duterte Joke about rape “I saw her face and I thought, 'What a pity... they raped her, they all lined up. I was mad she was raped but she was so beautiful. I thought, the mayor should have been first” AFP/Getty The most controversial quotes from Rodrigo Duterte Insulting Barack Obama "Mr Obama should be respectful and refrain from throwing questions at me about the killings, or son of a bitch, I will swear at you in that forum" REUTERS The most controversial quotes from Rodrigo Duterte On Abu Sayyaf Islamic militants "If I have to face them, you know I can eat humans. I will really open up your body. Just give me vinegar and salt, and I will eat you. If you annoy me to the fullest... I will eat you alive. Raw" EPA

A frustrated Alejano told reporters that he'll discuss with his colleagues from the Magdalo party whether they should file their own complaint before the ICC.

He said it was clear that the impeachment procedure “was railroaded” and that the House “is not independent.”