OWOSSO, Mich. (WJRT) – The City of Owosso is suing a developer after they failed to clean up debris from a roof collapse in August. Owner David Acton says shortly after the roof at 117 Exchange Street fell, he worked with the city to brace the exterior walls. Both Acton and City Manager Nathan Henne hoped that would allow them to keep the historic look downtown and prevent damage to other buildings.