(KMOV)-- Four people were injured after a roof collapsed at a building in St. Louis.
This happened around 11 a.m. Thursday in the 2600 block of Choteau at the Mid City Dental Service building.
Authorities said four people were transported, all with very minor injuries. Authorities said part of a parapet wall gave way, causing building material to come down into a dentist's office.
One person was in dental chair when this happened. He's one of the 4 transported with minor injuries.
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Building division is looking into why the wall collapsed.