Investigators are working to determine the cause of a fire in Cochrane early Wednesday morning. Cochrane Fire crews attended the fire in the Fireside neighbourhood at approximately 2:20am. Mutual aid was called in from Calgary and Rocky View County, as well as Cochrane RCMP. The investigation is underway and is expected to take several days.A number of homes under construction were involved: two multi-family buildings under construction and nine vehicles were destroyed; 12 single family dwellings and a number of other vehicles were damaged.Cochrane RCMP are actively seeking input from the community about this incident. Anyone who observed any suspicious activity in Fireside overnight are asked to contact the Cochrane RCMP at 403-851-8000.