Boulder County fire crews extinguished a controlled burn that had gotten out of control north of Longmont today.

Boulder County Sheriff’s Division Chief Heidi Prentup said the fire reached about 5 acres in size and mostly burned in grass and a few trees.

Prentup said one structure was briefly threatened by the fire, but is no longer threatened.

“They’re mopping it up right now,” Prentup said at 12:20 p.m. Thursday.

Hygiene and Lyons fire responded to the fire.

Mitchell Byars: 303-473-1329, byarsm@dailycamera.com or twitter.com/mitchellbyars.

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