AGUA DULCE (AP) — Authorities say a wildfire that has charred 640 acres of dry brush in a rural area of northern Los Angeles County is 95 percent contained, and firefighters will work into the night to surround it.

U.S. Forest Service spokesman Nathan Judy says more than 400 firefighters from the Forest Service, Los Angeles County and Cal Fire continued building containment lines and attempting to prevent flare-ups Sunday, a day after the fire broke out in Mint Canyon near Agua Dulce. Full containment is expected Monday.

Judy says there are no homes or buildings in the remote area. Eight aircraft remain assigned to the blaze.

One firefighter suffered a sprained shoulder battling the fire in the steep terrain.

The cause of the fire is under investigation.

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