Prosecutors declared a Texas man innocent Monday of a rape and robbery that put him in prison for 30 years, more than any other DNA exoneree in Texas.

DNA test results that came back barely a week after Cornelius Dupree Jr. was paroled in July excluded him as the person who attacked a Dallas woman in 1979, prosecutors said Monday. Dupree was just 20 when he was sentenced to 75 years in prison in 1980.