In one post from November 12, Zuckerberg tried to play down concerns about the impact of fake news on the election.
Facebook has recently faced tremendous backlash over fake news, in no small part due to Zuckerberg's insistence that media shared on the social network wouldn't have influenced voter behavior.
"Of all the content on Facebook, more than 99% of what people see is authentic. Overall, this makes it extremely unlikely hoaxes changed the outcome of this election in one direction or the other", Zuckerberg wrote in the post.
"These posts were removed by mistake", Facebook said.
On November 19th, Zuckerberg published another update to his timeline outlining the company's plan to combat fake news by listing a series of improvements (stronger detection of hoaxes, better reporting tools, warnings for articles flagged as false, etc.) that Facebook is actively working on. We've been working on this problem for a long time and we take this responsibility seriously.
Facebook, which restored the posts later during the day, said that the posts had disappeared due to a bug in the website's system, according to a statement sent to DPA. "Some of these ideas will work well, and some will not".
Earlier this month, a odd bug caused Facebook to display a memorial message about users' regular profile pages, including that of Zuckerberg, erroneously declaring them to be deceased.
BuzzFeed News recently accrued data showing that numerous top performing Facebook news stories from this past election season were drawn from fake news sites that spread hoaxes or misinformation.
In addition a follow-up from November 19 was removed.