Columbus (US), Apr 25: Attorney General Mike DeWine has said that the slayings of eight family members in rural southern Ohio “was a pre-planned execution” and he expects the investigation will be lengthy. The Friday killings at four different homes near Piketon was “a sophisticated operation,” DeWine said at a news conference yesterday in the small community that has been on edge since the seven adults and one teenage boy were found shot in the head.(Also Read: USA: 13 people killed in single day in Ohio, Georgia; police hunt for killers) Also Read - Naked Man Rollerblades on Highway Wearing Only a Giant Panda Mask, Video Goes Viral | Watch

“This was very methodical. This was well planned. This was not something that just happened,” said Pike County Sheriff Charles Reader, saying most were targeted while they were sleeping. Authorities have been scrambling to determine who targeted the clan and why. Investigators have interviewed more than 30 people in hopes of finding leads in the deaths. The victims were identified Saturday as 40-year-old Christopher Rhoden Sr.; his 16-year-old son, Christopher Rhoden Jr.; 44-year-old Kenneth Rhoden; 38-year-old Gary Rhoden; 37-year-old Dana Rhoden; 20-year-old Clarence “Frankie” Rhoden; 20-year-old Hannah Gilley; and 19-year-old Hanna Rhoden. Also Read - Maskhole! Woman Thrown Out of Plane For Refusing to Wear Face Mask While Travelling Amid COVID-19 | WATCH

It appeared some of the family members were killed as they slept, including Hanna Rhoden, who was in bed with her newborn baby nearby, authorities said. The infant was 4- or 5-days old. The baby, Hannah Gilley’s 6-month-old baby, and 1 other small child were not hurt. Since the slayings, authorities have refused to discuss many details of the crime, including any evidence or the search for the assailant or assailants. Investigators sought tips and gave people a number to call if they had any details about the crimes. Also Read - Taco Bell Allegedly Fires Man For Wearing Black Lives Matter Face Mask, #RIPTacoBell Trends Globally

A Cincinnati-area businessman also put up a USD 25,000 reward for information leading to the capture and conviction of the killer or killers. Two of the crime scenes are within walking distance of each other along a sparsely populated, winding road that leads into wooded hills from a rural highway. The third residence is more than a mile away, and the fourth home is on a different road, at least a 10-minute drive away, said the investigation’s leader, Benjamin Suver, a special agent in charge with Bureau of Criminal Investigations.