Rob Price / Business Insider:

Facebook says it “mistakenly deleted” some of Zuckerberg’s old Facebook posts that were public and reported on, including a post about the Instagram acquisition  —  – Some old Facebook posts by CEO Mark Zuckerberg have disappeared, and the company says it “mistakenly deleted” them.

Facebook says it "mistakenly deleted" some of Zuckerberg's old Facebook posts that were public and reported on, including a post about the Instagram acquisition (Rob Price/Business Insider)
Source: Tech Meme