The Norton Fire in Clayton. Image from CAL FIRE.
CLAYTON, Calif. - Forward progress of a vegetation fire in Clayton has been stopped. The fire has grown to more than 40 acres, and is 40% contained officials say.
The Norton Fire broke out on Thursday at Nortonville Road and Diamond Way in Contra Costa County, officials with CAL FIRE said. They said the fire started at around 5:30 p.m.
"Firefighters are working diligently to contain the fire currently burning in the grass. Significant air and ground resources are at scene and en route," CAL FIRE's SCU unit said.
In an update, CAL FIRE said steep terrain and weather conditions have made containment difficult, but that firefighters were making good progress. Firefighters will remain at the scene and will continue to reinforce containment lines.
The Contra Costa County Fire Department is also working this incident.
It is not clear how the fire began. No structures appear to be threatened. The cause of the fire is under investigation.
This is a developing story.