War of words as Lufti and Lynne Spears clash

Britney Spears' manager Sam Lufti and her mother Lynne Spears have gone to war and they're using US media outlets to attack each other.

Lutfi sparked the battle when he phoned Los Angeles radio host Ryan Seacrest on Thursday night to gush about his "sister", Britney, and the mental health problems that prompted a headline-grabbing intervention early on Thursday morning.