A review of Alabama Criminal Code states in section 13A-3-27 (g) that a private person acting on his own account is justified in using physical force upon another person when and to the extent that he reasonably believes it necessary to effect an arrest or to prevent the escape from custody of an arrested person whom he reasonably believes has committed a felony and who in fact has committed that felony, but he is justified in using deadly physical force for the purpose only when he reasonably believes it necessary to defend himself or a third person from what he reasonably believes to be the use or imminent use of deadly physical force.