There is a heavy police presence at a home on Youngstown's South Side.

Mahoning County Sheriff Jerry Greene confirmed with 21 News that deputies with the Mahoning County Sheriff's Office, as well as SWAT units are conducting an investigation at a home on Canfield Road.

At this time, the nature of the investigation is unknown, but drivers are asked to avoid the area for the time being. 

21 News crews on scene observed several unmarked vehicles in a yard at the home.

We're working to learn more about this investigation and will update this story when more information becomes available.