Update: Adds latest info on fire size and containment.

Ed. Note: KHTS is using the breaking news format for this incident. New information is timestamped and pushes older information down in the post. 

Firefighters have stopped the forward progress of a 4 acre blaze along the highway 14 freeway near Placerita Canyon Rd. Sunday evening, fire officials said.

8:15 p.m.: The brush fire is at four acres with 75 percent containment. No injuries to civilians or fire personnel have been reported. The cause is under investigation, according to L.A. County Fire officials.

6:55 p.m.: Fire officials confirmed the fire burned somewhere between 4 and 5 acres before firefighters stopped the forward progress of the flames. Crews on scene have the blaze 35 percent contained, and all aircraft have been recalled from the incident.

6:38 p.m.: Firefighters have managed to stop forward progress on the fire, which has grown to 4 acres.

6:35 p.m.: The fire is 20 percent contained according to a Nixle from the L.A. County Fire Department.

6:25 p.m.: A video by Janet Ryan shows the flames alongside stalled traffic along the freeway:

The fire reportedly broke out at about 5:45 p.m.

Fire officials confirmed the fire is at 3 acres as of 6:20, and is making slow progress uphill alongside the freeway. The area has light to medium brush, meaning there is fuel for the fire to burn.

The California Highway Patrol issued a SIGalert shortly after 6 p.m. shutting down all northbound traffic on the 14 at Golden Valley Rd., except for the carpool lanes. The stop is expected to last approximately 2 hours.

Initial reports indicate the fire has burned one acre and is slowly growing.

KHTS will add more information about this incident as it becomes available.