A manhunt for a suspect or suspects in the execution-style killings of eight family members in south-central Ohio entered its second full day on Sunday, with authorities providing no fresh information about the murders or the investigation.

The victims, all members of the Rhoden family in Pike County, Ohio, were discovered in four separate homes on Friday. They ranged in age from 16 to 44.

A newborn infant, a 6-month-old and a 3-year-old all survived the shootings. Local media reported that the mother of the newborn was in bed with her baby when she was shot.

"I can't believe how anyone could kill a mother with her four-day-old baby in her arms," Phil Fulton, pastor of the Union Hill Church in Peebles, the town where the shootings took place, told CNN on Saturday.

Investigators have not publicly identified a possible motive in the massacre. It was not clear whether authorities believe the shootings were carried out by one or multiple people.

A local restaurateur, Jeff Ruby, offered a $25,000 reward for any information that leads to the arrest and conviction of the person or persons responsible.

Officials said on Saturday that autopsies would be performed by the end of the weekend on the eight victims. They were identified as Hannah Gilley, 20; Christopher Rhoden Sr, 40; Christopher Rhoden Jr, 16; Clarence "Frankie" Rhoden, 20; Dana Rhoden, 37; Gary Rhoden, 38; Hanna Rhoden, 19; and Kenneth Rhoden, 44.