Wisconsin police said two people died while attempting to use a dangerous wood-burning technique that has become popular on social media. The Marathon County Sheriff's Office announced the findings of an investigation into the deaths a couple found dead in a house fire. Marathon County officials and fire marshals and other agencies concluded that they died by accidental electrocution while attempting to use an art technique called "fractal wood burning" prior to the fire. In a statement, the sheriff's office explained the method uses high-voltage electricity to burn "tree-like patterns into wood" that has been soaked in a chemical solution. After announcing their findings, the sheriff's office warned against the dangers of fractal wood burning. "The Marathon County Sheriff's Office wishes to alert citizens of the dangers of fractal woodburning, an art form that has gained popularity on social media sites such as TikTok, Facebook, and YouTube," they mentioned. "The fractal burning process typically uses a high-voltage transformer, often repurposed from a microwave oven, to flow current across wood items that have been soaked with a chemical solution. This process is highly dangerous and should only be done by trained professionals," they added.