Early the next morning, authorities said they found her body near 100 Acre Island, a nature preserve in the middle of the pond. An autopsy later that day determined the 48-year-old woman’s death was a homicide.

Maine State Police have not arrested anyone in the murder of paddleboarder Sunshine Stewart. The 48-year-old woman's cause of death remains a mystery.

Police in Maine are investigating the death of a paddleboarder near a campground in rural Maine as a homicide and asking the public for help finding the killer.