A peace officer, without a warrant, may arrest a person if the officer has probable cause to believe: 1. A felony has been committed.Pursuant to A.R.S. §133907, a corrections officer may arrest and serve warrants on individuals who are incarcerated in the Pima County Adult. How do I find out if I have a Warrant for my arrest? If you suspect that a warrant exists for your arrest you should contact the court of jurisdiction. "You don't have to wait until there is contact with police and get arrested before dealing with a warrant," Vesely said. Pima County's Pretrial Services can run a warrant check for you, free of charge and with no obligation. No warrant is required. You will be asked to provide a case number, name, birth date, and social security number (if available). No, it's not possible to obtain an arrest warrant without probable cause.