Crews found an unresponsive man lying in the road on East Nottingham Road, about 100 yards east of North Main Street.
The sheriff’s office said that initial investigation found that the pedestrian ran across East Nottingham Road as a red pickup truck approached and was hit.
The driver remained at the scene and is cooperating with investigators, according to the sheriff’s office.
Medics took the man to Miami Valley Hospital with life-threatening injuries, the sheriff’s office said.
The crash remains under investigation.
We are working to learn more and will update this story with any new information.
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