COLUMBUS, Ohio — A family of four was arrested Tuesday in the gruesome slayings of eight people from another family in rural southern Ohio two years ago, the first break in a case that left a community reeling and surviving family members wondering if answers would ever come.

Arrested were four members of the Wagner family, who lived near the scenes of the killing about 60 miles south of Columbus.

One of those arrested was Edward “Jake” Wagner, 26, who was once the boyfriend of one of the eight victims, 19-year-old Hanna Rhoden.

The others were Wagner’s father, George “Billy” Wagner III, 47; his wife, 48-year-old Angela Wagner; and George Wagner, 27. The Wagners had since moved to the Kenai Peninsula. A June 2017 Dayton Daily News article reported that the family had attended church in Kenai. KTVA reported in December 2017 that the family was living in Kenai.

No motive has been announced.

Police in Kentucky say the FBI tracked “Billy” Wagner to Lexington, where he was arrested without incident at around 12:30 p.m. Tuesday. Lexington police weren’t sure if he had been living in the area.

Authorities said Wagner was arrested in a horse trailer that was pulled over.

It’s the culmination of a massive investigative effort since seven adults and a teenage boy were found shot in the head at four homes in April 2016.

Investigators scrambling to determine who targeted the Rhoden family and why had conducted over 130 interviews and processed over 100 pieces of evidence and 550 tips, while getting assistance from more than 20 law enforcement agencies.

Authorities had refused to discuss many details about the slayings, saying they didn’t want to tip their hand to whoever was responsible for the shootings.

Authorities in June of 2017 announced they were seeking information about the Wagners, including details on personal or business interactions and conversations that people may have had with the four.

None was named a suspect at the time. Investigators also said they had searched property in southern Ohio sold by the Wagners.

Jake Wagner was a long-time former boyfriend of Hanna Rhoden, one of the eight victims, and shared custody of their daughter at the time of the massacre.

Both Jake Wagner and Angela Wagner told the Cincinnati Enquirer they were not involved in the April 2016 killings.

Angela Wagner said in an email to the newspaper that what happened was devastating and Hanna Rhoden was like a daughter to her.

A message was left Tuesday with John Clark, an attorney who has been representing the Wagners. Clark said a year ago that four of the Wagner family members had provided laptops, phones and DNA samples to investigators, and agreed to be interviewed about the slayings.

The Wagner family has lived in Peebles, Ohio, at the time of the killings but later moved to Alaska.

Clark told The Cincinnati Enquirer that the family was being “harassed while the real killer or killers are out there.”

A coroner said all but one of the victims was shot more than once, including two people shot five times and one shot nine times. Some also had bruising, consistent with the first 911 caller’s description of two victims appearing to have been beaten. The coroner’s report didn’t specify which victims had which wounds.

Authorities said marijuana growing operations were found at three of the four crime scenes. That’s not uncommon in this corner of Appalachia but stoked rumors that the slayings were related to drugs, one of many theories on possible motives that percolated in public locally.

The victims were identified as 40-year-old Christopher Rhoden; his ex-wife, 37-year-old Dana Rhoden; their three children, 20-year-old Clarence “Frankie” Rhoden, 16-year-old Christopher Jr., and 19-year-old Hanna; Frankie Rhoden’s fiancée, 20-year-old Hannah Gilley; Christopher Rhoden Sr.’s brother, 44-year-old Kenneth Rhoden; and a cousin, 38-year-old Gary Rhoden. Hanna Rhoden’s days-old baby girl, another baby and a young child were unharmed.

It appeared some of them were killed as they slept, including Hanna Rhoden, who was in bed with her newborn nearby, authorities said. The child, Hannah Gilley’s 6-month-old baby and another small child weren’t hurt.

Three funerals were held for the victims.