Britney Spears' estranged manager Sam Lutfi is under investigation by Los Angeles police over allegations he drugged the troubled star. Lutfi was served a restraining order earlier this month and was instructed to keep his distance from the Spears family after Britney's mother Lynne claimed the manager had admitted he drugged her daughter.

According to website TMZ, the allegations are now being investigated by the Major Crimes Division of the Los Angeles Police Department.

Lutfi's new spokesman Michael Sands tells TMZ.com he is aware of the investigation.

Spears had been hospitalized for psychiatric evaluation at Los Angeles UCLA Medical Center, but was discharged last week after a seven-day stay.

-Britney Spears Pictures

(This news article provided by World Entertainment News Network)