SAN DIEGO - Search warrants obtained by 10News show multiple phone calls made between James DiMaggio and Hannah Anderson the day her mother and younger brother were killed.
In the warrants unsealed Wednesday, authorities said the 40-year-old DiMaggio tortured and killed Christina Anderson, 44, and her 8-year-old son Ethan on August 4.
In addition to killing the woman and her son at his Boulevard home, authorities said DiMaggio also fatally shot the family's dog and set the structure on fire, the documents stated.
According to the warrants, a fire captain found Christina Anderson's body face down under a tarp in the garage and the body of the dog under a sleeping bag about 8 p.m. A crow bar and blood was found by her head.
The badly burned body of a child -- determined to be Ethan -- was located later in the residence.
In the documents, authorities noted Christina Anderson's 16-year-old daughter, Hannah, was picked up from cheerleading practice at Sweetwater High School at 4 p.m. on August 4. It is not known who picked her up.
Authorities said Hannah's cellphone was turned off at about the same time, and according to the warrants, before her phone and DiMaggio's phone were turned off, Hannah and DiMaggio called each other about 13 times that day.
Authorities learned through interviews with Hannah's friend that DiMaggio -- who the family called "Uncle Jim" -- took her on multiple day trips, the most recent one to Malibu and Hollywood.
The Boulevard fire and subsequent disappearance of Hannah and DiMaggio prompted a nationwide Amber Alert.
Also in the documents, during the active search for DiMaggio, it was noted by authorities that DiMaggio's sister, Lora Robinson, made "multiple/unusually large volume of calls to DiMaggio's phone on the day of the crime."
After a weeklong search, authorities located DiMaggio and Hannah Anderson last Saturday near Morehead Lake, about 80 miles northeast of Boise, Idaho. He was fatally shot and the girl, who was unharmed, was told of the deaths of her mother and brother.
Authorities said when a federal hostage-rescue team spotted the pair, the suspect shot at them with a rifle.
At least one agent returned fire, killing DiMaggio, according to law enforcement officials. Hannah returned to San Diego County earlier this week.
10News has been in close contact with family members through all of this. In an email from Hannah Anderson's great aunt, she wrote, "The report is awful. We are so sad."
Warrant 1 (mobile users: http://bit.ly/18vO1NI)
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