LAS VEGAS (AP) - Federal officials are investigating why an Allegiant Air passenger jet nearly ran out of fuel before landing at an airport that was temporarily closed to most traffic.

     Allegiant said Tuesday it is cooperating with the Federal Aviation Administration's investigation of the incident.

     The Allegiant plane with 144 passengers landed safely last Thursday at Hector International Airport in Fargo, North Dakota, after a flight from Las Vegas.

     While the Fargo airport was the flight's intended destination, it was temporarily closed for practice by the Navy Blue Angels flying team. On audio captured by the website LiveATC.net., an air traffic controller can be heard telling an Allegiant pilot that his company should have known about the closure.

     The Allegiant pilot said he didn't have enough fuel to reach another airport.