BEND, OR -- The Deschutes County District Attorney's office continues to go through cases analyzed at the Oregon State Police crime lab in Bend during Nika Larsen's tenure. This week, Larsen agreed to plead guilty to stealing controlled substances from the lab. She'll be sentenced in December.

D.A. John Hummel says Larsen's crime means his office has to re-examine more than a thousand case files. "Me and my deputies are reviewing all of the 1,019 cases out of Deschutes County that were reviewed by the crime lab in Bend during Nika Larsen's employment. I want to make sure her involvement in that lab did not taint the integrity of any of those convictions. We're plowing our way through, we have a ways to go," Hummel tells KBND News. "We're about halfway through and, to date, there are 15 convictions that I've asked to be overturned."

Hummel admits the work is taking longer than expected. "I hoped that we would be done by the end of August, but the volume just caught up to us. So, it's now looking more like the end of September or early October we'll complete our review."