A bipartisan group of senators said early Sunday that reports of Russian interference in U.S. elections should “alarm every American,” adding that recent cyberattacks “have cut to the heart of our free society.”

ADVERTISEMENT

“For years, foreign adversaries have directed cyberattacks at America’s physical, economic and military infrastructure, while stealing our intellectual property. Now our democratic institutions have been targeted,” Sens. John McCain John Sidney McCainCindy McCain endorses Biden: He's only candidate 'who stands up for our values' Biden says Cindy McCain will endorse him Biden's six best bets in 2016 Trump states MORE (R-Ariz.), Lindsey Graham Lindsey Olin GrahamSenate GOP aims to confirm Trump court pick by Oct. 29: report The Hill's Campaign Report: GOP set to ask SCOTUS to limit mail-in voting Senate GOP sees early Supreme Court vote as political booster shot MORE (R-S.C.), Jack Reed John (Jack) Francis ReedWhen 'Buy American' and common sense collide Hillicon Valley: Russia 'amplifying' concerns around mail-in voting to undermine election | Facebook and Twitter take steps to limit Trump remarks on voting | Facebook to block political ads ahead of election Top Democrats press Trump to sanction Russian individuals over 2020 election interference efforts MORE (D-R.I) and Charles Schumer Chuck SchumerSenate Democrats introduce legislation to probe politicization of pandemic response Schumer interrupted during live briefing by heckler: 'Stop lying to the people' Jacobin editor: Primarying Schumer would force him to fight Trump's SCOTUS nominee MORE (D-N.Y.) said in a statement calling for an investigation.

“Recent reports of Russian interference should alarm every American.”

The Washington Post reported on Friday that the CIA concluded Russia intervened in the election to help Donald Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE win the presidency.

Various people have been identified who helped the Russian government leak hacked documents from Democratic sources, including the Democratic National Committee (DNC) and Hillary Clinton Hillary Diane Rodham ClintonButtigieg stands in as Pence for Harris's debate practice Senate GOP sees early Supreme Court vote as political booster shot Poll: 51 percent of voters want to abolish the electoral college MORE's campaign chairman, to WikiLeaks, according to the report.

President-elect Donald Trump assailed Democrats over the issue on Sunday, saying it was ridiculous to think Russia interfered in the election to help him get elected.

He charged that Democrats are looking for an excuse as to why they lost the White House, even as he again touted his "massive landslide victory" in the Electoral College.

The senators said on Sunday that Congress’s national security committees have worked “diligently” to address the “complex challenge” of cybersecurity, adding that “recent events show that more must be done.”

“While protecting classified material, we have an obligation to inform the public about recent cyberattacks that have cut to the heart of our free society. Democrats and Republicans must work together, and across jurisdictional lines of the Congress, to examine these recent incidents thoroughly and devise comprehensive solutions to deter and defend against further attacks,” they said.

“This cannot become a partisan issue. “The stakes are too high for our country. We are committed to working in this bipartisan manner, and we will seek to unify our colleagues around the goal of investigating and stopping the grave threats that cyberattacks conducted by foreign governments post to our national security.”

Other senators on Sunday also called for a response to Russia's reported interference.

"I think we need to get to the bottom of it," he told ABC. "And I think there should be an investigation because in order to defend ourselves against other adversarial countries, we have to protect our information."

“The speaker can not comment on or characterize the content of classified briefings but he rejects any politicization of intelligence matters,” AshLee Strong added, without mentioning the senators' call for an investigation.

--Scott Wong and Mallory Shelbourne contributed to this report, which was updated at 4 p.m.