At approximately 5:05 pm Saturday, the East Contra Costa Fire Protection District responded to a report of a vegetation fire in the area of Holland Tract Road at Tranquility Bay Road in the Town of Knightsen.
While responding, the fire district received a report of people in the area shooting off guns and lighting fireworks. The Contra Costa Sheriffs Office was dispatched as a precaution.
Upon arrival, Battalion 5 stated the fire was approximately 2 acres and as units were responding, it was reported that a tractor attempting to assist the district then caught on fire.
As of 5:25 pm, due to the amount of smoke, a helicopter was requested to allow the district to get an overhead view.