Gilbert 19-year-old Jackie Hartman, who was missing for nearly three weeks before her body was found just east of Fountain Hills, was killed by a gunshot to the back of her head, according to an autopsy report from the Maricopa Forensic Science Center.
Hartman, whose body was found Feb. 18, also suffered multiple skull fractures from blunt force trauma, the report shows. She was identified through dental records.
According to a search warrant released in April, investigators found a 9 mm bullet in the soil underneath Hartman’s body.
The bullet was linked to a gun belonging to Jonathan Burns, who is accused in the sexual assault and slaying of Hartman. Burns’ girlfriend, Mandi Smith, was charged in connection with buying the gun for Burns while he was on parole and not allowed to have a firearm.
Jackie Hartman’s father David Hartman said Monday that he still appreciates “everybody who was there” for his family during his daughter’s disappearance.
Hundreds of volunteers helped Hartman’s family search for the teen for weeks, but it was ultimately police who located the body.
Hartman, a student at Chandler-Gilbert Community College, was last seen Jan. 28 on a date with Burns, who later told police he dropped her off and went home. Cell phone records show Burns placed calls at the time of her disappearance from an area near where her body was finally found in a dry creek bed off state Route 87.
The autopsy report shows Hartman had alcohol and the drug GHB in her system. GHB is naturally produced in the body, but it is unclear whether her own cells made it or if she was drugged. The toxicology expert at the Maricopa County Forensic Science Center could not be reached late Monday to provide an answer.
Burns was charged with first-degree murder, kidnapping, sexual assault and misconduct involving weapons. Prosecutors plan to seek the death penalty.
A trial has not yet been scheduled for Burns or Smith.
“Obviously we can’t get (Jackie) back, so we want to concentrate on getting justice,” David Hartman said.
Hartman’s father said he and his family are now working to start a nonprofit organization for missing adults.
The family is also maintaining a Web site — www.findingjackiehartman.blogspot.com — which has regular updates on fundraising efforts and allows viewers to post comments.
“We encourage everybody’s comments on how this has touched their lives,” Hartman’s father said. “That’s really therapeutic for us to read.”