Fire investigations take time.  Fire investigators analyze fire-related incidents to determine the origin and cause of the fire or explosion.  Fire investigators examine the scene after firefighters have extinguished the fire, collect and analyze evidence.  Fire investigation is similar to a crime scene investigation, but with more difficulties and dangers.  Fire investigation can help identify whether the fire was natural, accidental, or intentional, and may lead to criminal charges.  If you recently had a fire, it may take some time to get a fire report.