Two people have been killed after a single-engine plane crashed at a small airport near downtown Kansas City.

Fire spokesman James Garrett says the single-engine plane crashed shortly after taking off Sunday afternoon from the Charles B. Wheeler Downtown Airport. Garrett says the two people killed were the only two people on the plane. No other injuries were reported.

The victims’ identities have not been released.

Garrett says the cause of the crash is under investigation by the National Transportation Safety Board.

Wheeler Airport, located a few miles west of downtown Kansas City, is used largely by corporate and recreational flyers.