( CNN ) -- Her ankles bound , her mouth covered with duct tape , Christina Anderson was bashed at least 12 times in the head . Her 8-year-old son Ethan 's body was burned beyond recognition . Those were some of the grisly details released this week by the San Diego Medical Examiner 's office investigating the deaths connected to the Hannah Anderson kidnapping case , a case that captured the nation 's interest last month . In August , Christina Anderson , 42 , and Ethan were killed by family friend James Lee DiMaggio , who then set fire to his house and kidnapped 16-year-old Hannah , authorities said . This led to a multi-state manhunt that ended with the FBI shooting DiMaggio , 40 , in the Idaho woods and Hannah 's rescue . DiMaggio 's sister : Hannah Anderson was 'trouble ' Few details had been released about the deaths of Christina and Ethan Anderson . But the autopsy reports obtained by CNN give shocking details . Christina Anderson 's ankles were bound by a plastic cable tie , and duct tape was wrapped around her neck and mouth , her autopsy report said . Her right arm and both legs were fractured , and there was a cut on her neck . Her body was found in the garage of the burning home , alongside a family dog that had been shot . Ethan was found in another part of the home , burned beyond recognition . It was believed , according to the autopsy , that the boy died because of the fire . Ethan also had skeletal fractures that could have been caused by events that day . San Diego County deputies searching DiMaggio 's charred home found a handwritten note , handcuff box , camping equipment , a DNA swab kit , two used condoms and letters from Hannah , according to an affidavit . Contents of the letters and the handwritten note were not revealed in the affidavit . In an interview since the ordeal , Hannah called herself a survivor . `` In the beginning I was a victim , but now knowing everyone out there is helping me , I consider myself a survivor instead , '' she told NBC News . `` My mom raised me to be strong . '' Hannah Anderson 's first TV interview : 'My mom raised me to be strong ' CNN 's Traci Tamura contributed to this report .
Hannah Anderson was kidnapped in August . The teen 's mother and brother were killed . Hannah was rescued after James DiMaggio , a family friend , was shot by police . He later died at the hospital.