Sheryl Sandberg said Thursday Facebook is "fully cooperating" with government investigators probing the Russian influence in the 2016 presidential election as she continued the company's damage control tour in Washington.

"We have an enormous responsibility here because people come to Facebook everyday to share with their friends and family, and to express themselves," Sandberg, the chief operating officer of Facebook, told Axios' Mike Allen during an interview in Washington.

Sandberg met with leaders of the House Intelligence Committee on Wednesday, and it was revealed the panel will release some of the thousands of Russian-linked Facebook ads that have been turned over to Congress.

Sandberg said the ads should "absolutely" be released, and the social media giant is "fully cooperating with Congress and the Special Counsel [Robert Mueller]."

"It should not have happened ... It is troubling foreign interference in a democratic election," she said, adding, "We have a responsibility to everything we can do to prevent this kind of abuse."

Facebook, along with Twitter and Alphabet (Google's parent company), have all been invited to testify before the House and Senate Intelligence Committees about Russian interference on Nov. 1.

Sandberg said the social media giant is hiring 4,000 new workers to weed out the "bad actors" who create the fake accounts that post both fake and "divisive" ads and posts. Those pages are down now, she said.

Sandberg explained most of the ads and posts were by fake accounts, but had they been "legitimate people, we would have let them run."

"We don't allow hate, violence and bullying," she explained, adding, "We don't check what people post." But she noted Facebook is there for sharing, period.

"If you allow free expression, you allow free expression," she said. "We want to do good, and we want to build community."

Sandberg called on other platforms to up their transparency standard.

"We hope to set a new standard for transparency and advertising, she said. "This is a new threat, but it's not really a new challenge."

Sandberg — who heavily backed Democratic nominee Hillary Clinton — said also Facebook owes Americans an apology for allowing foreign interference in the 2016 election.