Susquehanna murder

In October 1869, a ten year old boy went missing in Susquehanna County, Pennsylvania, and at the time, didn't receive much attention. After 134 years and two months, farmers found a mangled corpse, later identified as the boy who disappeared. Studies reported in 2005, that a man, Milton John Vanhook, was the perpetrator who murdered the boy. In later years, the case has sparked conspiracy theories. As of September 2017, this case is open and currently under investigation.

Status
In November 2007, FBI dismissed the case for unspecified reasons. On July 1, 2016, an unnamed woman demanded re-opening of the investigation. After a court meeting in January 2017, FBI has officially opened the case.