This May 2022 handout photo released by Operation Underground Railroad shows Hidu, an electronics detection dog, trained to sniff out a certain chemical used in the manufacture of small memory devices like flash drives, in Indianapolis, Indiana. The anti-sex-trafficking group loaned Hidu to help Mexico City prosecutors search the apartment of a suspected Dutch child pornography promotor arrested in early June. Hidu sniffed out a hidden cell phone and hard drives that authorities said were filled with child porn images. (Operation Underground Railroad via AP)
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