The British parliamentary panel investigating the phone hacking at Rupert Murdoch’s media empire has asked Murdoch’s son, James Murdoch, to return for additional questioning. The request comes days after former News Corp. executives testified James Murdoch was made aware of widespread phone hacking at his newspapers, contrary to his July testimony. The younger Murdoch continues to insist he was unaware of the scale of the hacking. Meanwhile, The Guardian newspaper claims to have uncovered two large caches of emails and documents within its archives that contain evidence of more phone hacking at the News of the World than previously disclosed.