Colorado Supreme Court Declines to Review New Trial Order in 1990s Pipe Bomb Murder Case
The Colorado Supreme Court has declined to hear the appeal of prosecutors seeking to overturn a ruling that granted a new trial to James Genrich, a man convicted of two murders in a series of pipe bombings that terrorized Mesa County between 1989 and 1991
Genrich, now 62, is serving a life sentence at the Arkansas Valley Correctional Facility in Buena Vista after a 1993 jury found him guilty of planting pipe bombs that killed Maria Delores Gonzales and Henry Ruble. His conviction hinged largely on tool mark analysis presented by federal agents, evidence that has since come under scrutiny.
New Trial Granted After Forensic Evidence Questioned
In 2023, District Court Judge Richard Gurley ordered a new trial, ruling that the tool mark evidence used to tie Genrich’s wire cutters and pliers to one of the bombs was unreliable. ATF Agent John O’Neil had testified that marks on wires from an unexploded bomb matched Genrich’s tools “to the exclusion of all other tools,” making it the only physical evidence linking Genrich to the devices.
During a 2022 evidentiary hearing, experts brought by Genrich’s attorneys—including lawyers from The Innocence Project—challenged both the methodology used in the original analysis and the credibility of tool mark analysis as a forensic science. A National Academy of Sciences report has previously found that practitioners frequently overstated the certainty of their conclusions.
Gurley concluded the state’s case relied heavily on O’Neil’s testimony and that without it, a jury likely would have acquitted Genrich.
The Colorado Court of Appeals upheld the ruling in May.
Prosecutors Sought High Court Review
In its petition to the Colorado Supreme Court, the 21st Judicial District Attorney’s Office argued that Gurley overstated the significance of O’Neil’s testimony and that the defense had not provided evidence pointing to another suspect. Prosecutors also asked the justices to clarify how courts should handle cases where advancements in scientific understanding undermine prior forensic methods.
“There is no indication in the record that the newly discovered evidence…is affirmatively demonstrative of Genrich’s innocence,” the filing stated, emphasizing that the defense experts critiqued the field broadly but did not review the actual evidence in Genrich’s case.
Prosecutors also noted that their own experts had examined the original materials and maintained that tool mark comparisons—generally done by pattern matching under a microscope rather than through measurements—could still be reliably applied.
Case Returns to Mesa County for Retrial
The Supreme Court declined to take up the case, meaning the matter returns to Mesa County District Court, where prosecutors must now prepare for a second trial more than three decades after the bombings.
“We were disappointed that the Colorado Supreme Court declined the opportunity to hear the case, but understand that a very small percentage of cases are accepted by them,” District Attorney Dan Rubinstein said in an email. “Now our focus can be turned entirely to preparing for the retrial.”
Genrich has maintained his innocence since his arrest.
