The purpose of this policy is to establish uniform procedures in the handling of arrests both with and without a warrant and in summary cases. Section 3904 - Arrest without warrant.The Arrest​​ Depending on the severity of the crime, the police may arrest a suspect without a warrant and later file the criminal complaint with the MDJ later. However, the police may arrest a person in their home without a warrant if special circumstances exist. Not exactly, but the warrant will be out there, and any officer in any other state can and should arrest you for violation of that offense. "Exigent circumstances. " This means an emergency justifying entry into a home or building. The Pennsylvania Supreme Court has just decided the case of Commonwealth v. Romero. However, in these situations, they do not need to obtain a warrant, which means there are no formal charges against the suspect yet. (b) The arrested person will not offer satisfactory evidence of identification.