San Diego County sheriff's officials say Daniel Witczak was stabbed Saturday night at the George Bailey Detention Center in San Diego.
He was treated for non-life threatening wounds. Authorities aren't not releasing any details of the assault.
The 30-year-old was wounded in a shootout last September after deputies went to his Lakeside apartment to investigate allegations that he molested his girlfriend's daughters.
Two deputies were wounded.
He's pleaded not guilty to molestation and attempted murder of a peace officer.
Information from: U-T San Diego, http://www.utsandiego.com