GRAND JUNCTION, Colo. — Forest officials in Ouray County are formally announcing what caused the Simms Fire that burned through nearly 370 acres south of Montrose.

The Simms Fire was first reported on May 19th, near the Ouray / Montrose County Line.

Officials say it burned through 373 acres, one home, and two camp trailers – while threatening other structures, and prompting evacuation orders.

No residents were hurt, but a county commissioner says one cat injured in the fire had to be euthanized.

Here’s the big news: Investigators just confirmed what many feared. It was the Simms Mesa Prescribed Fire Project conducted on May 16 that actually caused that out of control fire.

Investigators are still identifying and contacting potential witnesses to make sure they have all the relevant information.