627:7 Use of Force in Defense of Premises.
A person in possession or control of premises or a person who is licensed or privileged to be thereon is justified in using non-deadly force upon another when and to the extent that he reasonably believes it necessary to prevent or terminate the commission of a criminal trespass by such other in or upon such premises, but he may use deadly force under such circumstances only in defense of a person as prescribed in RSA 627:4 or when he reasonably believes it necessary to prevent an attempt by the trespasser to commit arson.
Source. 1971, 518:1, eff. Nov. 1, 1973.