Rupert Murdoch has lost a legal fight to change his family's trust, which would have let his son Lachlan take control the family's media empire after Murdoch's death.

A sealed document obtained by The New York Times says a Nevada commissioner has ruled against Rupert Murdoch’s effort to change his family’s trust to give his son Lachlan Murdoch control of his media empire and ensure Fox News maintains its conservative editorial slant.

A Nevada probate commissioner has ruled against Rupert Murdoch’s attempt to alter his inviolable family trust to give his oldest son Lachlan Murdoch control of his media empire, in an effort to preserve Fox News’ conservative slant.