Facebook is "fully committed" to providing detailed information about ads in Russia during the US elections, says Sheryl Sandberg.
The ads, pages they linked to and who were they Targeted to have investigators, said Ms Sandberg.
The ads and the fake accounts used to get and removed, she said.
However, she added, if the ads had been placed by real accounts, Facebook would not have removed them.
"Things happened on our platform in this "That said should not happen," said Ms Sandberg, chief operating officer of the social network in an interview with news site Axios.
"We have an enormous responsibility here," she said, adding that Facebook was "fully co-operating" with official investigators looking into what is believed to be the Russian efforts to influence the elections.
On October 11, Ms Sandberg and others from Facebook appeared before US congressional panels in looking reports of Russian interference in the election.
"We think it's important that they get the whole picture and they explain that to the American public," she said, adding that once the investigation concluded and public made, Facebook provided more information a
Ms Sandberg said that Facebook has stepped up its monitoring systems since the discovery of the wide-ranging ad campaign, which piped more than 3,000 ads on the social network that were seen by about 10 million people.
Facebook invested in machine-learning techniques to help spot fake accounts that were used to spread similar advertisements to those campaign in the 2016 campaign. The site had also taken steps to stop those fake accounts profiting from the ads they put on Facebook, she said. .
It also expected to get more information from US intelligence agencies on other "bad actors" and will move to their website, said Ms Sandberg during the wide-ranging interview The social network was "aggressively"
"We do not want this kind of foreign interference in Facebook," she added. "No-one wants that kind of interference."
Expanding on whether the advertisements were allowed to run if they were posted by real people, Ms Sandberg said the site did not interest in vetting information or curbing free
"When you cut off speech for one person, you cut off speech for all people, she said.