An autopsy has determined Cassidy R. Derr likely died of natural causes, Schuylkill County coroner Dr. David J. Moylan said Thursday morning.

"Things point to the case of death being diabetes. But that's highly preliminary," he said."This could well be a natural death related to the Type 1 diabetes. The picture could change if we get back toxicology that says something else," he said.The autopsy was performed Thursday morning by Forensic Pathology Associates of Allentown. The results of a toxicology screen have yet to be returned.Schuylkill Township police chief Frank DiMarco, aided by the forensics team of state police at Frackville are investigating the circumstances surrounding Cassidy's death.Efforts to reach DiMarco were unsuccessful early Thursday.Cassidy, 17, and an insulin-dependent Type 1 diabetic, vanished after walking away from a party in the rugged, wooded area of Locust Mountain, between Tuscarora and Brockton, after an argument in the early morning hours of Sunday.She kept in touch with other friends, via Snapchat and text, finally admitting she was lost somewhere along old Route 209. That last message was sent at 7:51 a.m. Sunday.Police have said her family last saw her on Saturday, before she left her Lansford home for the party.They reached out through social media on Sunday. When Cassidy was still missing on Monday morning, friends, family and rescue teams launched a search.Late Monday afternoon, the North East Search and Rescue group had five dog teams staging at the Tuscarora ball fields, asking Cassidy's family and friends to suspend their own searches to avoid confusing the K-9s.While state police were searching by air, the dog teams moved out. The dogs picked up the teen's trail, leading handlers to a jacket with her scent on it, which was found in the Newkirk area. Then the trail went cold.Tuesday, searchers returned with cadaver dogs and found her body near a stripping pit.Also searching were members of the Tuscarora Fire Company, who used four wheelers to cover the utility line area and mine roads, while Schuylkill County Emergency Management Coordinator John Matz provided detailed maps of the area.A search dog on Tuesday afternoon located Cassidy's body in a deep ditch or pit in a rugged area on Locust Mountain. She was pronounced dead by Schuylkill County Deputy Coroner David Truskowsky.Her body was recovered at about 1 a.m. Wednesday after the state police forensics team finished its work, Moylan said.Cassidy's family had recently moved to Lansford from Tamaqua, where Cassidy had attended Tamaqua Area High School before being home-schooled.She was a soccer player and hoped to become a nurse some day, according to the GoFundMe account that has been established for funeral expenses.The account can be accessed at

https://www.gofundme.com/cassidy-derrs-funeral-services.A total of $1,598 had been raised by Thursday morning.