Crews battled a brush fire along the river near southbound Interstate 5 and Richards
Boulevard on Monday afternoon.
The fire was reported about 4:20 p.m.
Officials urged drivers to use caution because of very heavy smoke. Traffic was backed up as roadways were shut down because of low visibility.
At least one witness reported seeing a man set the fire, according to the CHP.
Sac City Fire says that a person of interest has been taken into custody. He has been identified as 46-year-old David Cove.
Cove was arrested on charges of possession of drugs, an outstanding warrant and arson.
Stay with FOX40 and FOX40.com for updates on this developing story.