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A wildfire near Gorman burned 200 acres Sunday night, according to the Los Angeles County Fire Department.

The Post Fire was reported near the northbound 5 Freeway and Gorman Road as a quarter-acre brush fire, the Los Angeles County Fire Department tweeted at 7 p.m.

An hour later, the Los Angeles County Sheriff’s Department’s Santa Clarita Valley Station described the fire as being 75 to 100 acres. Then, just before 10 p.m., fire officials said the blaze had grown to 200 acres, and firefighters had stopped its forward progress.

However, officials have not given an estimate for containment.

The fire has resulted in closures of the northbound 5 Freeway, 138 Freeway and Gorman Post Road, according to California Highway Patrol. However, all lines of the southbound 5 Freeway were open while CHP officials were working to reopen two northbound lanes.

Caltrans officials have warned drivers of delays along the 5 Freeway in the area. A photo from the Los Angeles County Fire Department shows cars sitting in densely packed traffic on the freeway as helicopters make water drops over the wildfire nearby.

Clouds of smoke and a few flames are visible along a stretch of the roadside in the photo.

Check back for updates to this developing story.