WICHITA, Kan. (AP) — Authorities say the bodies of all four victims have been removed from a Wichita flight training facility that was hit by a small plane this week.

Fire Marshal Brad Crisp said the body of the pilot was removed Saturday from the roof of the building at Wichita Mid-Continent Airport.

The bodies of the other three victims who were inside a flight simulator when the twin-engine plane hit Thursday were pulled from the rubble a day earlier.

Crisp says the removal of the pilot’s body was made more difficult because of the crumbling structure, which caught on fire after the crash.

National Transportation Safety Board officials say the cockpit voice recorder has been recovered but it’s unclear whether a flight data recorder survived.