By Richard Allen Greene and Dan Rivers, CNN
updated 7:07 AM EDT, Tue May 1, 2012

London (CNN) -- Global media tycoon Rupert Murdoch is not a "fit and proper person" to run a major international company, British lawmakers investigating phone hacking at his tabloid the News of the World reported Tuesday.

The ruling could prompt British regulators to force him to sell his controlling stake in British Sky Broadcasting, a significant part of his media empire.