Investigators in Lake County, Michigan are searching for answers, as they try to figure out what killed 30 year-old Cullen Finnerty.
The former standout quarterback at Grand Valley State University won three national championships and even played briefly in the NFL, but on Sunday he mysteriously died while on a fishing trip by himself.
His family says they received a disturbing call from Finnerty saying "he was leery of some things".
That was the last they heard from him.
His body was found Tuesday about a half a mile from his boat and authorities say there were no signs of trauma or foul play.
Lake County Sheriff, Robert Hilts is Outfront with the latest.