Arizona's Sheriff Joe Arpaio says the mailing of an explosive device addressed to him reflects the nature of his business and follows many threats he's received over the years.
Arpaio has called himself the "toughest sheriff in America" and is known for his strict treatment of jail inmates and cracking down on illegal immigrants.
His office says a mailed package intercepted in northern Arizona Thursday contained an explosive device.
A federal official won't confirm a device was found, but Arpaio's office says it was detected when the package was X-rayed. A bomb squad team neutralized the explosive.
Postal Inspector Patricia Armstrong says a "very astute" carrier emptying a collection box in the Flagstaff area thought something about package's outside looked wrong.
Armstrong says investigators are examining the package's contents.
The device intercepted in Flagstaff late Thursday was in a package addressed to Arpaio at his downtown Phoenix office, the Maricopa County Sheriff's Office said in a statement.
It appeared suspicious, so it was X-rayed and the device was detected. A bomb squad team neutralized the explosive, the statement said.
Arpaio's chief deputy, Jerry Sheridan, told The Arizona Republic that investigators believe the package was picked up on Thursday at a rural Post Office box. Flagstaff is about 140 miles north of Phoenix.
Tom Mangan, a spokesman in Phoenix for the federal Bureau of Alcohol, Tobacco, Firearms and Explosives, said initial reports indicated that the package was a box that may have been damaged in transit and leaked gunpowder.
Following the killing of a West Virginia sheriff last week, Arpaio said elected law enforcement officials across the nation seem to be targeted.
A national hero to conservatives on immigration issues, Arpaio himself has been the target of numerous threats. That prompted the need for a security detail for the lawman also known for dressing jail inmates in pink underwear and making them sleep in tents in the heat of the Arizona desert.
A campaign to recall Arpaio began just weeks after he started his sixth term in January.
Critics contend Arpaio should be ousted because his office failed to adequately investigate more than 400 sex-crimes cases, allegedly racially profiled Latinos in its trademark immigration patrols and has cost the county $25 million in legal settlements over treatment in county jails.
Arpaio has denied that his deputies racially profiled Latinos in traffic patrols targeting illegal immigration. His office has moved to clear up the sex-crime cases and moved to prevent the problem from happening again, he said.
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