South Metro Fire Rescue responded to a fire in a residential triplex on Hummingbird Drive in Castle Pines Village, according to a tweet from the agency.
No injuries were reported and the fire was under control shortly after the South Metro team arrived.
The fire started because of a propane barbecue and was accidental in nature, South Metro said in a tweet.
"Flames extended into an exterior wall and were quickly extinguished before the fire spread into the residence," South Metro tweeted.Â