UPDATE: The entirety of Middle Valley Road has reopened after a "serious accident" Thursday afternoon, HCSO says.
We're working to learn if anybody was injured in the crash.
PREVIOUS STORY: Emergency personnel are responding to the 6900 block of Middle Valley Road after a "serious crash," the Hamilton County Sheriff's Office said in a Facebook post Thursday.
A portion of the road, between Courtland Road and Boy Scout Road, has been temporarily closed.
Drivers should avoid this area until further notice.
This is a developing story.