It is never advised to run away. Under New Jersey law, anyone who runs can be considered a “fleeing suspect.” This means the officer will be given the legal authority to do things that would normally require a warrant without needing to first obtain one. Moreover, fleeing usually gives an officer probable cause that criminal activity is afoot. Therefore, once someone flees, the officer can search his/her person, enter any building he/she enters, arrest him/her, etc.