According to the timeline, it was just after James M was arrested and just before the W's sold their farm and disappeared to AK.
JMO, its possible the agent discovered something hinky in the cell phone/email/messaging records between JM and JW.
LE had been hounding JM since the day of the murders. Per their allegations, their subpoena's of everyone's phone / computer records showed activity between JM and JW the night of the murders. They put trackers on both of their trucks. When JM finds and destroys his, they arrest him. They question him about a text message between him and JW the night of the murders and messages or conversation between JM's wife AM and DR the night of the murders.
One article around then quotes someone saying due to poor cell phone coverage in the area, messages sent often aren't delivered to the other person for hours.
JMO, JM didn't budge on any of that when they questioned him. Perhaps LE then took a closer look at the phone/message records and discovered that JW had been hacking other people's phones, messaging accounts, etc. Then the light bulb turned on and they searched the W's Peterson Rd farm and the other properties.
Another possibility is something found during the searches of the Wagner farms. The turning point in the case seemed to begin with putting the GPS tracker on JM's and JW's trucks,
though at that time, I think LE still thought (wrongly) that JM did it. (When all is said and done on this case, I'd still like to know where JM's red truck came from, who gave it to him after the murders and who owned it prior to that.)
ETA: See timeline entry for May 9, 2017
Here's the timeline from that period:
Friday, April 21, 2017
Rhoden family members plead with public for tips to solve murders
https://www.dispatch.com/news/20170...members-plead-for-tips-to-solve-massacre-of-8
Saturday, April 22, 2017
Pike County LE place a GPS tracking device on truck owned by James Manley, brother of Dana Manley Rhoden. LE claims it was placed there because the truck was related to an aggravated murder case
http://www.cincinnati.com/story/new...ng-pike-county-massacre-case-court/101773632/
Friday, April 28, 2017
11:35 am - James Manley finds and removes tracking device and destroys it
http://www.cincinnati.com/story/new...ng-pike-county-massacre-case-court/101773632/
Wednesday, May 3, 2017
PCSO/BCI conducts an audio interview with Jake and Angela Wagner
https://local12.com/news/local/jake...rt-some-evidence-turned-over-to-his-attorneys
Approx. May 5, 2017
Jacob Wagner asks ___ Brown if he can store some trailers on his property. He tells him his Peterson Rd. farm is sold and he and his brother have found good paying jobs up north and are moving there. He needs to move out of the farm for new owners. JW drops off 3 trailers at the Brown property a week before the search
https://www.cincinnati.com/story/ne...assacre-more-search-details-emerge/101713414/
Monday, May 8, 2017
PCSO/BCI conducts audio interview with George Wagner III
https://local12.com/news/local/jake...rt-some-evidence-turned-over-to-his-attorneys
Tuesday, May 9, 2017
Jake Wagner stopped his activities related to intercepting, wire, oral or electronic communications, per Count 20 of his Indictment
https://www.ohioattorneygeneral.gov...Prosecutions/PikeCountyMurderIndictments.aspx
May 10, 2017
BCI search at 260 Peterson Rd
May 5 - May 12, 2017
Sometime after dropping off 3 trailers loaded with furniture and personal possessions, Jacob Wagner and family leave the area. Later posts on FB show photos of them in a location resembling areas in Alaska or Canada.
Friday, May 12, 2017
Abt 11 am - PCSO, BCI, Adams County SO, Ohio Dept. of Corrections STAR and other Ohio LE agencies conduct a search at properties related to Jacob Wagner & family.
260 Peterson Rd, Peebles, OH - farm formerly owned by Wagner's parents, where JW resided with his mother, father, brother, daughter Sophia Rhoden Wagner and daughter of his brother George.
Unlimited Motors, St Hwy 41, Peebles, OH - Auto repair business and farm of ___ Brown, friend of J Wagner.
Ibid
Saturday, May 13, 2017
LE team PCSO, BCI) raids Flying W Farms. Franklin County Sheriff's office assists. Franklin County claims their SWAT team accompanied the raid, saying they had an arrest warrant. FCSO later retracts the statement. A neighbor of Flying W Farms who witnessed the vehicle caravan entering and leaving the property is interviewed, claiming there was a SWAT vehicle and an ambulance present.
http://www.cincinnati.com/story/new...elative-charged-evidence-tampering/101747576/
http://www.cincinnati.com/videos/news/2017/05/16/rhoden-investigation-intensifies/101759968/
From <
https://www.websleuths.com/forums/threads/media-timeline-no-discussion-pike-co-oh-8-family-members-murdered.306329/page-8>
PCSO/BCI conducts an audio interview with Angela Wagner
https://local12.com/news/local/jake...rt-some-evidence-turned-over-to-his-attorneys
Tuesday, May 16, 2017
PCSO/BCI conduct audio interview with Angela Wagner
https://local12.com/news/local/jake...rt-some-evidence-turned-over-to-his-attorneys
Wednesday, May 17, 2017
PCSO/BCI conduct audio interview with George Wagner IV.
12 News notes transcript of the interview was provided in JW's discovery.
Jake Wagner appears in court, some evidence turned over to his attorneys
May 18, 2017
BCI searches a Ford Excursion, retrieves items for testing and submitted as evidence
Jan 17, 2019 Discovery list
ETA: Adding a few more dates from the timeline:
June 8, 2017
BCI searches trash at Days Inn, Jackson, OH (presume this hotel where GW3 and family stayed)
https://html2-f.scribdassets.com/5zbix3y0ow6tp04l/images/7-f66b74f151.jpg
June 19, 2017
AG DeWine and Sheriff Reader make public appeal for information about Wagner family
https://www.dispatch.com/news/20170...n-about-family-regarding-pike-county-slayings
June ? 2017
Wagner family leaves Ohio to eventually end up living in Kenai, AK