Sheriff: Killers in Pike County may be locals
Here is the quote from Reader, 6 months after the murders, about 2 fights before the murders:
"Records show none of the victims had criminal records. Reader said some of the family was involved in two fights not reported to police before the murders."
Yes I agree that when Reader said this he suspected the Wagners. He said this at the same time he said he believed that locals committed the murders. This was a big deal interview back then because it shifted the focus away from Mexican drug Cartels.
LE also believed that the killers were very familiar with the Rhoden properties and LM said to get past the dogs, the dogs would have known them. The Wagners fit the bill on both counts.
This Reader interview was October 17, 2016 and is close to Billy and Angela's first audio interviews:
September 9, 2016---Billy audio interview
October 5, 2016---Angela audio interview
Put it all together and yes, I bet they suspected the Wagner's 6 months into the investigation.