(CNN) Ohio police arrested two 16-year-old boys this week on charges of reckless homicide after a woman was killed by a falling log in a state park.

Victoria Schafer, 44, was at Hocking Hills State Park when she was hit by a falling section of a tree and later pronounced dead at the scene, an Ohio Department of Natural Resources (ODNR) spokesman, David Roorbach, said in a statement. She died September 2.

"Investigators later found evidence suggesting the incident was not a natural occurrence," the statement said.

During the investigation into the incident, detectives learned about two teenage boys who may have been involved, the Hocking County Sheriff's Office said.

The two boys confessed when they were interviewed by investigators.

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