UPDATE

Two different TV stations are giving different descriptions of what caused the collapse Sunday. Here is the one from WTRF-TV that says the rig was pulling out when this occurred:

According to officials the collapse at Station 3 on Pennsylvania Avenue occurred, in part, due to previous damage. A truck, without it’s ladder up, was being moved forward to do some routine maintenance. The high side compartment door was open when the firefighter went to pull the truck out. It hit the middle support beam between the two garage doors, which is completely non-weight bearing.

EARLIER

WTOV-TV:

A partial collapse at the city of Weirton Fire Department took many by surprise, and made quite the mess in the process. Three were on scene when a fire truck backed into the middle wall of the building, bringing down the façade, and parts of the roof. Chief Jerry Shumate was home when the accident occurred around 7 p.m. Sunday. “Just had to come up and see what the damage was. The first thing I asked was anyone hurt. Nobody hurt, and then we go from there,” Shumate said. One fire truck suffered body damage when the façade collapsed on to it. The two main trucks are undamaged, and will be kept outside of the building while the debris is cleaned up.

Roof of Weirton Fire Department fire station collapses on top of a fire truck @WTRF7News pic.twitter.com/w4cNDrAOKa — Sara Yingling (@SYinglingWTRF) September 7, 2015

BREAKING: A a partial collapse at the city of Weirton Fire Department. Details tonight on @WTOV9 pic.twitter.com/eAzncNzNHb — Sean Eiler (@SeanWTOV9) September 6, 2015

Demo of Weirton Fire Department firehouse underway @WTRF7News pic.twitter.com/vPTaquLdKm — Sara Yingling (@SYinglingWTRF) September 7, 2015