Click in the Eyewitness News story window above to watch Subha Ravindhran's report from the scene, including interviews with neighbors and friends of the victims
Daniel Savage, 51, and Jaclyn Savage, 57, lived with their elderly father on Huntridge Road in north Tustin.
Authorities said the siblings have been dead for a couple of days, and their father has been living with the bodies. Their father suffers from Alzheimer's and authorities say he probably was not aware of his children's death. He is not considered a suspect nor a witness in the deaths and is now staying with other family.
Another sister found the siblings around 11 a.m. Sunday when she came to pick up her father.
Although unspecified weapons were found in the home, the bodies did not exhibit any signs of trauma and there were no signs of forced entry, police said.
Autopsies are scheduled Monday to try to uncover the exact cause of death.