ANTIOCH -- Crews are working to contain a grass fire that is burning near Marsh Creek and Deer Valley roads, according to Cal Fire officials.
The fire was reported shortly after 5 p.m. There have been no reports of injuries and no structures threatened.
The fire is nearly contained, and spread to roughly 15 acres, according to a Cal Fire spokesperson.
The cause of the fire is unknown.
The fire comes on the heels of a 26-acre brush fire that burned near Byron Airport earlier Thursday. That fire was contained at 4:23 p.m. The cause of that fire is also unknown.
Check back for updates.
Contact Katie Nelson at 925-945-4782 or follow her at Twitter.com/katienelson210.