Conn. Gen. Stat. § 13b-362

In an action to recover for any injury occasioned by fire communicated by any railroad locomotive engine in this state, the fact that such fire was so communicated shall be prima facie evidence of negligence on the part of the person or corporation who, at the time of such injury by fire, is in the use and occupation of such railroad, either as owner, lessee or mortgagee, and of those who at such time have the care and management of such engine.