We may never know the cause of the fire at St. Catharines greenhouse

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The Fire Marshall on the scene at Pioneer Flower Farms yesterday says there will not be an investigation to determine the cause of the greenhouse fire.

Deputy Fire Chief Frank Biancucci says it's just not possible to target a specific cause with the extent of the damage and large area of investigation.

All investigators are saying right now is that the origin of the fire was on the northeast side of the building.

The fight to contain the fire carries on today as backhoes are being used to move smoldering concrete and metal to target the last few hot spots.

Deputy Fire Chief Biancucci says the goal for today is to conclusively say the fire out, but emergency crews will not be handing the property back over to the owners until they are 100% certain the last of the smoldering hotspots put out.