RavnAir canceled at least a dozen flights in Alaska on Saturday � at the peak of holiday travel � following what the company described as �a malicious cyber attack� on its computer network.

The cancellations affected around 260 passengers, company spokeswoman Debbie Reinwand told the Anchorage Daily News.

The regional carrier canceled all flights involving its Dash 8 aircraft until noon �because the cyber attack forced us to disconnect our Dash 8 maintenance system and its back-up,� the company said in a written statement.

It wasn�t immediately clear which routes had been canceled. Reinwand said the company would be issuing more updates later in the day.

�We expect to experience other schedule cancellations and delays within the RavnAir Alaska (Dash 8 Aircraft) network throughout the rest of the day,� she said.

The company is working with the FBI, other authorities, and a cyber security company, to restore systems.

PenAir flights and RavnAir Connect flights were still operating normally on back-up systems, Reinwand said.

(AP)