9:50 p.m. Update: Police have cleared the scene and determined the unidentified substance was not hazardous,
Residents will be allowed to return to their homes shortly.
6:50 p.m. Update: Sacramento Police say an unidentified hazardous material was found.
The bomb unit is still on scene as a precaution.
Officials expect to remain on the scene for about an hour.
SACRAMENTO (CBS13) — Police in Sacramento are investigating a suspicious device in a downtown backyard at 6th Street and S Street.
Some houses have been evacuated and others have been told to shelter in place.
Police were called to the scene around 5:30 p.m.
The bomb unit has been called as a precaution and officials are investigating the device to ensure it is not a threat.
This is a developing story.