Nancy Guthrie, 84, was abducted from her Arizona home on Feb. 1.
Authorities have arrested a man in connection with the 1986 rape and murder of a teenage girl, a case that has haunted investigators for decades.
Paul Hicks was found guilty in the 2001 kidnapping and murder of his estranged wife Regina Hicks, after he drove her unconscious body into a pond and let her drown.
The district attorney's office confirmed Floyd William Parrott died after he was charged last month in connection with the "Lovers' Lane Murders," a case that remained unsolved for decades.
According to one of the warrants, authorities believe there could be bodies buried on the 18th Street home in Bacliff, which records show belongs to James Elmore Jr.
The woman accused in the 2011 cold case murder of an Iowa real estate agent was spotted by a witness outside the crime scene just after the fatal gunshots.