City fire crews removed the bodies of all four victims of a plane crash at an airport in Wichita, Kansas, days after the incident due to raging fires that made it too dangerous to get in the building.

They died when a Beechcraft King Air 200 that was loaded with fuel lost power in its left engine right after taking off on Thursday at Wichita Mid-Continent Airport, where it then slammed into the FlightSafety Building in a fiery collision.

Removing the bodies from the building has taken several days because of the instability of the structure and the concern about the safety of fire crews who are attempting to recover the bodies.

Those killed include the pilot of the plane as well as three people in the building, who were in a flight simulator when the plane crashed.

The city was planning on using heavy equipment to stabilize the building first so that crews could then get at the bodies, according to ABC News.

The body of the pilot was removed from the roof of the building, and the other three bodies were within the flight simulator.

Fire crews remained on the scene to deal with flare-ups of the fire, which had burned for days causing the structure to crumble, according to the Associated Press.

Officials had to recover the cockpit voice recorder by lowering a person into the rubble on a harness, as they wanted to begin investigating right away. The voice recorder has been sent for analysis to Washington, D.C.