Autopsies conducted Friday confirmed the identities of the man and woman found dead inside a DeBary home Thursday, but how the couple died remains unknown, an official said.Additional testing will be required to confirm the causes of death for Richard and Lenora Powers, Volusia County sheriff's spokesman Gary Davidson said.Property records show Richard Powers, 81, and Lenora Powers, 72, owned their home at 42 Jasmine Drive.The investigation into the Powerses' deaths began Thursday afternoon when the couple's daughter in South Florida asked a family friend, Gary Bartlett, to check on her parents because she hadn't been able to reach them by phone for a week.Bartlett flagged down rescue units that were in the area on an unrelated call about 1:30 p.m.