MINNEAPOLIS -- Officials say a review of 14,000 criminal cases in Minnesota in the 1980s and '90s found DNA technology could not exonerate any convicted felons.

Authorities determined that 33 cases could potentially provide evidence about a defendant's guilt if new DNA testing was done. Hennepin County Attorney Mike Freeman said today (Wednesday) that of those cases, 12 defendants declined testing, 11 tests were inconclusive, eight confirmed the original conviction and two are still outstanding.

Freeman said one of the outstanding cases remaining is that of convicted serial killer Billy Glaze, who died in prison last year.

Before his death, Glaze's lawyers had pushed to have his conviction thrown out and a new trial ordered in light of new DNA evidence they said might prove his innocence.