The roof collapsed at the Han-Dee Hugo's BP gas station on Hillsborough Street in Raleigh.
First responders arrived on scene around 7 a.m. Friday.
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Everyone was able to evacuate the building before it fell, according to Raleigh police.
A BP spokesperson told WRAL at the scene that the collapse was caused by water accumulation on the roof. Raleigh Fire said it was possibly weather-related, but they won't know for sure until the inspectors complete their investigation.
The spokesperson anticipated that it would take several months before the store was able to reopen.