A reported commercial fire in Fruit Valley prompted a two-alarm response Tuesday morning but was later downgraded.The commercial fire was reported about 7 a.m. at Pacific Die Casting Corporation, 5712 N.W. Fruit Valley Road. Firefighters initially requested a second alarm but canceled it later, said Capt. Kevin Murray, Vancouver fire spokesman.Firefighters learned everyone had evacuated and the fire was contained to oil on an overheating machine, Murray said. The fire was over quickly.The monetary cost of the damage was undetermined as of late Tuesday. The cause of the fire remained under investigation.Clark County Fire District 6 responded as part of the second alarm.