SAN FRANCISCO - A Facebook Inc executive said in an internal memo in 2016 that the social media company needed to pursue adding users above all else, BuzzFeed News reported on Thursday, prompting disavowals from the executive and Facebook Chief Executive Officer Mark Zuckerberg.The memo from Andrew Bosworth, a Facebook vice president, had not been previously reported as Facebook faces inquiries over how it handles personal information and the tactics the social media company has used to grow to 2.1 billion users.Zuckerberg stood by Bosworth, who goes by the nickname "Boz," while distancing himself from the memo's contents. Bosworth confirmed the memo's authenticity but in a statement he disavowed its message, saying its goal had been to encourage debate.Facebook users, advertisers and investors have been in an uproar for months over a series of scandals, most recently privacy practices that allowed political consultancy Cambridge Analytica to obtain personal information on 50 million Facebook members. Zuckerberg is expected to testify at a hearing with US lawmakers as soon as April."Boz is a talented leader who says many provocative things. This was one that most people at Facebook including myself disagreed with strongly. We've never believed the ends justify the means," Zuckerberg said in a statement.