FAIRFIELD (CBS SF) — A four-alarm grass fire that broke out along Highway 12 in Fairfield Thursday evening, halting traffic and prompting some evacuations, has been extinguished, according to police officials.

No injuries were reported and no structures were damaged during the blaze, which was first reported at 5:04 p.m. on a portion of grass along Highway 12, west of Pennsylvania Avenue, police Sgt. Jeff Osgood said.

Firefighters remained on scene performing mop-up operations.

The fire, fueled by wind and grass, initially threatened the backyard fences of some homes on James Street and the Fairfield Vista Apartments, located at 201 Pennsylvania Avenue, police said.

The complex was evacuated.

Pennsylvania Avenue between Highway 12 and Woolner Avenue was closed, as well as the westbound lanes of Highway 12 between Pennsylvania Avenue and Beck Avenue.

All roads, including the highway have been reopened, according to police.

The closures had caused heavy congestion in the area.

The grass fire was the second one to occur Thursday in Fairfield.

Earlier Thursday afternoon, at about 2:22 p.m., fire officials reported a seven-acre, three-alarm grassfire in the area of Suisun Valley Road and Business Center Drive, just north of Interstate Highway 80.

No structures were threatened and there were no injuries reported in that grassfire, fire officials said.

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