A small airplane crashed into a ravine in this southwestern Colorado city Thursday, killing the four adults and one child aboard, authorities said.

Priscilla Anderson, a spokeswoman for the National Transportation Safety Board in Washington, D.C., said the Cessna 210 was en route from Prescott, Ariz., to Durango but canceled its flight plan.However, Cortez Police Chief Roy Lane said there was no indication from the crash that the airplane was trying to land at the Cortez airport, which is about four miles from the crash site.

"It was snowing real hard and there was fog (at the time)," Lane said. "Nobody actually saw the crash, several people heard it."

The names of the victims were being withheld until relatives were notified.