Prosecutors explained they decided to seek the death penalty because of insights from new information.
The new information in the case is that a second suspect, Steven A. Boerner, was identified in May from his fingerprint on the victim's steering wheel. Boerner, an ex-convict from Michigan, died in 1992 in a trucking accident.
The new insights came when prosecutors learned Boerner supposedly had confessed to a cellmate. Prosecutors said the cellmate reported Boerner admitted that he and another man kidnapped an Oklahoma woman in the 1980s, that they took her and her vehicle, that he drove while the other man raped her, and that they took the woman out into the country and cut her throat.