''I don't want to subdue anyone and have no powers of arrest...''
yes,you do.
United States
Each state, with the exception of North Carolina, permits citizen arrests if the commission of a felony is witnessed by the arresting citizen, or when a citizen is asked to assist in the apprehension of a suspect by police. The application of state laws varies widely with respect to misdemeanors, breaches of the peace, and felonies not witnessed by the arresting party. American citizens do not carry the authority or enjoy the legal protections held by police officers, and are held to the principle of strict liability before the courts of civil- and criminal law including but not limited to any infringement of another's rights.[30]
Though North Carolina General Statutes have no provision for citizens' arrests, detention by private persons is permitted and applies to both civilians and police officers outside their jurisdiction.[31] Detention is permitted where probable cause exists that one has committed a felony, breach of peace, physical injury to another person, or theft or destruction of property.[32] Detention is different from an arrest in that in a detention the detainee may not be transported without consent.