(Bloomberg) -- Lawmakers from Britain and other nations tore into a Facebook Inc. executive after the companys decision not to send founder and CEO Mark Zuckerberg to testify at a hearing. The Department of Digital Culture Media and Sport tweeted an image of an empty chair captioned Where is Mark Zuckerberg?" after Facebook sent its vice president of policy solutions Richard Allan instead of its top executive. While Zuckerberg answered questions during U.S. congressional hearings in April he has repeatedly refused to appear before U.K. lawmakers. The social networks chief technology officer Mike Schroepfer was sent to answer questions in April. Source