A postal carrier collected the suspicious package, which was addressed to Sheriff Joe Arpaio, on Thursday evening. The FBI and other agencies are investigating the case.
Ross D. Franklin/AP/File
A postal carrier collected the suspicious package Thursday evening from a parcel locker in rural Coconino County, near Flagstaff, Ariz., which was addressed to Arpaio at his office in downtown Phoenix, said Jerry Sheridan, chief deputy of the Maricopa County Sheriff's Office, at a news conference Friday.
The carrier brought the package to the Flagstaff post office, where postal officials X-rayed it and found an improvised explosive device. The Flagstaff Police Department bomb squad used a water cannon to neutralize the explosives, said US Postal Inspection Service spokesman Keith Moore.