Firefighters responding to a reported house fire on the 2900 block of Green Street in Harrisburg around 7:05 a.m. on Saturday found Dr. Julia Pederson unresponsive inside the home, and she was later taken to Penn State Health Holy Spirit Hospital, where she was pronounced dead. An autopsy would later reveal a disturbing twist: the 41-year-old pediatrician was already dead before the flames were ever lit.
According to an affidavit of probable cause authored by Harrisburg Police Detective Jon Fustine, the fire was intentionally set in a bedroom after Pederson had already died, as reported by Daily Voice. Court paperwork cited by WHP 580 states the coroner ruled her cause of death a homicide by multiple traumatic injuries, and that she had been strangled and set on fire by her husband, Jonathan Alan Gatto.
Gatto, 41, has been formally charged with first-degree murder, aggravated arson, arson, abuse of a corpse, tampering with evidence, and endangering the welfare of a child. He is being held without bail at Dauphin County Prison, the outlet's report notes. As detailed by CBS Pittsburgh, Harrisburg police arrested Gatto on Wednesday following the investigation into the suspicious death and fire.
A Child Asleep in the House
Per the same account from WHP 580, Gatto allegedly set the fire while his 7-year-old daughter was asleep inside the house. The outlet reports that Gatto and Pederson had been discussing how to tell their daughter about their planned separation. Police reported the child was asleep in the residence during the incident, and community members have since established a GoFundMe campaign to assist Pederson's family and fund her surviving daughter's future education.
Gatto told police he heard what sounded like someone falling down the stairs but found no one there, the same account states. He said smoke detectors later woke him, that he removed his daughter from the home, and that he then returned for Pederson and burned his hand in the process.
A Career Devoted to Children's Health
Pederson earned her undergraduate degree from Harvard University in 2007, her medical degree from Stanford University School of Medicine in 2014, and completed her residency at Northwestern University's Lurie Children's Hospital of Chicago in 2017, according to the Daily Voice report. She went on to practice in California and eastern Pennsylvania, including stints with Stanford Children's Health and Chester County Pediatrics, before joining UPMC Children's Community Pediatrics in February.
A board-certified pediatrician and Fellow of the American Academy of Pediatrics, Pederson was able to speak Spanish, and UPMC highlighted her service to families in Camp Hill and Harrisburg, per the practice's own announcement. UPMC described her as a beloved pediatrician who devoted her career to caring for children and supporting families, according to CBS Pittsburgh's report. Friends who set up her GoFundMe page said she enjoyed exploring local nature preserves, reading, and learning to crochet, and that she had lived in Harrisburg with her family.
What Comes Next in Court
Gatto's preliminary hearing is scheduled for 11 a.m. on October 28 before Magisterial District Judge J. Matthew Pianka in Dauphin County. The case includes a first-degree murder charge.
The case also includes arson and child endangerment counts.
The case lands amid sobering statewide numbers. The Pennsylvania Coalition Against Domestic Violence's 2025 Fatality Report found that 99 people lost their lives to domestic violence in Pennsylvania that year, with 72 percent of those homicides committed by a current or former intimate partner. For a community that knew Pederson as a dedicated children's doctor, her death adds a painful local chapter to that broader pattern.
