CHARLESTON, W.Va. (AP) -- An airport official says two people have been killed after a cargo plane contracted by UPS went off the runway and over a hillside at a West Virginia airport.

Yeager Airport spokesman Mike Plante says the pilot and co-pilot died in Friday morning's crash.

Plante says the Air Cargo Carriers plane departed from Louisville, Kentucky, and was trying to land when it went off the runway and down a steep, wooded hillside.

The National Transportation Safety Board is investigating.