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.

Allowing Seacrest to repeat his comments during his breakfast show on Friday, a tearful Lutfi also took aim at the pop star's family, insisting they were "incapable of telling the truth and incapable of sympathising".

He told Seacrest that Lynne and her ex-husband Jamie were only interested in the pop star's finances and their image in the media.

Lutfi also spoke to US magazine People, telling reporters Lynne and Jamie only seem like concerned parents: "They came into the house with an agenda and are trying to look like the heroes after all the dirty work has been done. Their main worry is being financially cut off."

Britney's mum fired back by personally calling Seacrest to "set the record straight".

Off-air, she told the DJ not to believe everything written and said about her in the media, insisting her only concern is for her daughter's well-being.

Spears is currently on a 72-hour emergency hold at UCLA Medical Center, where she is undergoing psychiatric tests.