A Nevada prosecutor says he's dropping the case against a woman who spent more than 30 years in prison for a 1976 murder before a judge ordered a new trial based on recently discovered DNA evidence.

Washoe County District Attorney Chris Hicks said Friday there will be no retrial of Cathy Woods in the fatal stabbing of Michelle Mitchell on the edge of the University of Nevada, Reno.

A judge threw out the conviction in September after new DNA evidence linked the Reno crime scene to an Oregon inmate who now faces murder charges in California in a string of killings about the same time.

Judge Patrick Flanagan ordered the 64-year-old Woods to appear at a retrial July 13. But Hicks says he's filing a motion to dismiss the case.