Sheriff Kem Kimbrough has not named the inmates. But he says one of those released is accused of armed robbery. One of the others faces child molestation charges.
Kimbrough says a 30-day investigation revealed his supervisors weren't noticing deputies not following procedures. He says failures to do things like fingerprint incoming inmates means some inmates gave fake names and they were released using those names.
He says officials are "absolutely disgusted." Three of the four mistakenly released inmates are back in custody.