Officials said The killer and rapist who led the police in "the largest search of Texas history" was identified as the man who allegedly caused a cold snap in 1979 in Portland.
But Jerry Walter McFadden, who allegedly killed Anna Marie Hlavka, will not be tried for this crime because he was executed about 20 years ago.
The death of Anna Marie Hlavka, aged 20, dates back to July 24, 1979, when she was sexually assaulted and strangled to death in her apartment, police said in the country Thursday.
Decades have passed without progress to kill it.
From 2012 to 2016, DNA authorities provided eight people to try to identify the murderer, but none of the DNA reports correspond to the crime scene, police said.
McFadden, a convicted murderer, was executed in Texas in 1999.
Police said members of the McFadden family gave DNA to vandals who had confirmed a DNA match at the death scene in Portland.
McFadden had a long and violent criminal record, including murder, rape and kidnapping.
Portland police said McFadden's search was "the most important in Texas history" with more than 1,000 agents involved in the crime.