The unsecured creditors committee for bankrupt United Airlines have indicated that outside parties may be interested in making a bid for the carrier, a court document showed.

The committee filed the motion on June 9 supporting United's request for an extension of its exclusivity period, during which only the airline may file a reorganization plan.

The creditors committee, however, injected a sentence in the motion implying that others are considering filing their own reorganization plans.

"The committee does not acquiesce in or endorse any implication in the debtors' motion that there are not qualified parties interested in submitting alternate plans of reorganization," the creditors said in the motion.

The committee made no mention of who those likely suitors might be.

Jean Medina, a United spokeswoman, said the airline was unaware of any competing plans under development.

United, which has been in Chapter 11 since December 2002, has asked a the bankruptcy court for a 60 day extension of its exclusivity. The current period expires July 1.