Section 845 Of Chapter 5. Arrest, By Whom And How Made From California Penal Code >> Title 3. >> Part 2. >> Chapter 5.
845
. Any person who has lawfully entered a house for the purpose of
making an arrest, may break open the door or window thereof if
detained therein, when necessary for the purpose of liberating
himself, and an officer may do the same, when necessary for the
purpose of liberating a person who, acting in his aid, lawfully
entered for the purpose of making an arrest, and is detained therein.