TMZ, the country icon and her boyfriend, Rex Linn, were touring an old building in Atoka, Okla., when it started to partially crumble and a staircase collapsed.
The building, which was over 100 years old, was being renovated and the stairs were on the docket to be replaced, a local official said.
Reba and several others were on the second floor when the incident happened on Sept. 14. Why she was touring the building isn't known.
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