Christopher Ramirez vanished after chasing a neighbour's dog into the woods near Plantersville, Texas. A massive search effort turned up no clues until a good Samaritan stumbled upon him as the search entered its fourth day.
Although Sheriff Sowell (pictured) does not believe there was any foul play in Christopher Ramirez s disappearance (inset), he says federal and state investigators are still looking into the incident.