TITLE XII
PUBLIC SAFETY AND WELFARE
CHAPTER 173-B
PROTECTION OF PERSONS FROM DOMESTIC VIOLENCE
When the peace officer has probable cause to believe that the persons are committing or have committed abuse against each other, the officer need not arrest both persons, but should arrest the person the officer believes to be the primary physical aggressor. In determining who is the primary physical aggressor, an officer shall consider the intent of this chapter to protect the victims of domestic violence, the relative degree of injury or fear inflicted on the persons involved, and any history of domestic abuse between these persons if that history can reasonably be obtained by the officer.