BOISE - The fire that burned about 200 acres in the foothills above Hill Road was accidentally started by two children playing in a backyard fort, Boise Fire Department spokeswoman Char Jackson said Saturday.

The fire broke out Friday night in the area around Hill Road and Plano Lane.

Jackson said the children had started a small fire in their fort, and the fire got out of control. Ada County Sheriff's Office detectives are now handling the investigation.

Firefighters first went to the scene at about 8:30 p.m., and worked in steep terrain.

Jackson said the fire was contained at 3 a.m. Saturday, and that at least one unit would be monitoring the scene overnight.

Boise, Eagle, Middleton, Kuna, Meridian and Star fire departments, as well as Bureau of Land Management and Idaho National Guard, responded to the fire.

The Boise Fire Department said the fire threatened about ten homes, including the home Sean Hopkins and his family live in.

"I was just outside last night and I heard some crackling noise and all of the sudden I looked up and saw smoke," said Hopkins, who has lived the home for ten years. "It wasn't a big fire, but it was big enough to be scary."

Several homes were also evacuated because of the fire, but no homes or other structures were lost.

There wasn't any wind, so weather conditions were in firefighters' favor.

The Boise Fire Dept. wants to remind people that the foothills are extremely dry right now, and open burning is never allowed there.