Legal Repercussions of Probable Cause - Probable cause is enough for a search or arrest warrant. A peace officer, without a warrant, may arrest a person if the officer has probable cause to believe: 1.A felony has been committed. If you get arrested in Maricopa County, the police must read you your Miranda rights, otherwise known as the Miranda warning. The authority to arrest depends on the existence of a crime or arrest warrant; without a crime or arrest warrant, there can be no arrest. If the police are at your home, ask the officers if they have a warrant. If they do not, you do not need to let them in to your house – even if they ask. "Probable cause" is the standard required for a law enforcement officer to make an arrest as it relates to DUI or other criminal charges. Police officers do not need a warrant to perform a search in connection with an arrest. If a defendant who is not being held in custody fails to appear at any court hearing, the Court can issue a bench warrant for the defendant's arrest.