The suspected killer of a 23-year-old college student on a hiking trail in Arizona has been identified decades after the brutal murder thanks to developments in DNA technology, authorities said Friday.
On June 13, 1987, Cathy Sposito rode her mountain bike to the Thumb Butte Trail near Prescott and began hiking around 7 a.m., investigators with the Yavapai County Sheriff’s Office said during a news conference.
Hikers in the area later reported hearing screams for help, according to Sheriff David Rhodes, but they did not reach Sposito in time. The 23-year-old was found with a .22-caliber gunshot to an eye, stabbed, and bludgeoned with a wrench, Rhodes said.
Since DNA analysis was not being used at the time of Sposito’s murder, authorities were unable to identify the suspected killer. But 36 years later, investigators now have a name.
“Cathy Sposito, I am saying today with high confidence today, was murdered by Bryan Scott Bennett,” Rhodes said.
Bennett was a 16-year-old high school student in Prescott at the time Sposito was killed, according to officials.
In April 1990, Bennett had attacked and sexually assaulted a second victim on the same trail and at the same time of day as Sposito, the sheriff said.
DNA evidence from the second attack ultimately led detectives to link Bennett to the murder of Sposito and at least two other sexual assaults. The victims of the three other attacks all survived.
Bennett, however, returned to his home state of Kentucky in 1994 and died by suicide, officials said. His body was exhumed and authorities obtained a complete DNA profile, which positively matched DNA recovered from both attacks.
“Through the work of dedicated volunteers, numerous detectives and the many partners who give their time and their hearts to solving these cold cases, four women … were given either closure, peace or validation today,” said Rhodes.