Investigators returned Monday to the Knox County house where five children and two adults died in a fire Saturday.
State police do not suspect foul play, but have not determined what caused the deadly fire, Trooper Shane Jacobs, a state police spokesman, said Monday.
During their initial visit soon after the fire on Saturday, investigators took ashes from the house to be analyzed, according to family members of one victim.
Those who died in the fire were Jesse Disney, 27; his girlfriend, Nina Asher, 22, who was pregnant; Asher's children from a previous relationship, William Gray Jr., 3, Camden Gray, 2, and Abigail Gray, 8 months; and Paiten Cox, who would have been 3 this month, and Brielle Cox, 2.
Relatives had identified Disney, Asher and her children on Saturday. State police released the names of the other two victims Monday.
Sisters Paiten and Brielle Cox had been at Disney and Asher's home for a sleepover Friday night.
Jacobs said state medical examiners were performing autopsies on the seven people Monday.
The fire started in a back bedroom of the home Saturday morning between 9 and 10 a.m.
An uncle of Jesse Disney's rushed to the house to try to get people out, but Disney, Asher and the children were dead before he and firefighters arrived.