By Jennifer McRae | CBS Colorado
The Quarry Fire burning in Jefferson County is being investigated as arson. The fire is 431 acres in size and was 4% contained as of Friday morning.
The fire started near the intersection of West Deer Creek Canyon Road and Grizzly Drive on Tuesday night. According to the Jefferson County Sheriff’s Office, the fire grew slightly overnight Thursday into Friday in an open meadow that needed to undergo fire mitigation.
Investigators are now conducting an arson investigation on the Quarry Fire.