This is an archived article that was published on sltrib.com in 2012, and information in the article may be outdated. It is provided only for personal research purposes and may not be reprinted.

Firefighters worked on mopping up remaining hot spots Monday at a 40-acre blaze that burned in grasslands at the mouth of Ogden Canyon overnight.

Ogden Deputy Fire Chief Mathew Schwenk said the cause of the fire, which ignited about 4 p.m. Sunday on the north end of the canyon, appeared to be human-caused but remained under investigation.

"It looks like it pretty much put itself out overnight," Schwenk said Monday. "We're basically in mop-up mode today with about 14 personnel and a helicopter on standby."

Ogden, Weber County and U.S. Forest Service firefighters initially responded Sunday afternoon, finding the fire had started near a hiking trail. A witness told investigators that two juveniles were seen running away from the area shortly before the fire was spotted.