Britney Spears' friend Osama "Sam" Lutfi has filed papers objecting to the Superior Court commissioner assigned to the pop star's conservatorship case.

Lutfi filed the papers Friday, but was not present for a hearing Monday at which Commissioner Reva Goetz extended a temporary restraining order against him until April 16.

His one-sentence filing said: "Please take notice that Osama "Sam" Lutfi will not stipulate to the above-referenced case being heard by Reva Goetz, commissioner presiding, to whom the above-entitled case has been assigned."

The document was signed and indicated Lutfi was representing himself.

Although the document was filed Friday, it did not reach the courtroom in time for Monday's hearing, Superior Court spokesman Allan Parachini said Tuesday.

Parachini said Lutfi can appear in court on April 16 to ask for the case to be reassigned to a judge.

Commissioners perform many of the same duties as judges, but all parties have to agree to a commissioner hearing a case.

Michael Sands, a spokesman for Lutfi, said during the weekend that Lutfi agreed to abide by the terms of the restraining order for another month.

The order directs Lutfi to stay at least 250 yards away from the pop star and her homes.

The order was requested by Spears' mother, Lynne, when Spears was hospitalized on a psychiatric hold at UCLA Medical Center.