Police say a local security guard was found Wednesday to have thousands of computer files depicting child sex exploitation, and they are concerned there may be unreported victims.
Mitchell Beiro, 47, of the 2900 block of West Pincushion Lane, was booked into the Pima County jail on suspicion of 15 counts of sexual exploitation of a minor, police said.
Sgt. Chris Widmer, a Tucson police spokesman, gave the following account in a news release:
In December 2011, the Tucson Police Department's Internet Crimes Against Children Unit began an investigation into the online sharing of child sexual abuse images via peer-to-peer Internet networks.
Detectives traced a computer that had been sharing such files to a Beiro's address on Pincushion Lane. They served a search warrant on the home Oct. 3 and found "various computer related items, which contained thousands of files depicting the sexual exploitation of minors."
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Tucson police said they believe Beiro was involved in an unreported child molestation case in California, and they're concerned "that there may be other unreported cases in both Tucson and Southern California."
Police said Beiro is employed as a security guard for a local security company, which they did not name.
Anyone with information on this case, or about unreported cases of sexual misconduct, is asked to call 911 or 88-CRIME.

