This screen shot taken from the ask.fm website shows a social media page of Hanna Anderson. SAN DIEGO — A family friend tortured and killed a mother and 8-year-old son before setting his home on fire and escaping with the mother’s 16-year-old daughter, according to search warrants unsealed Wednesday.The warrants do not describe the torture but say firefighters found the mother’s body in James Lee DiMaggio’s garage near a crowbar and what appeared to be blood next to her head. A dead dog was found under a sleeping bag in the garage with blood near its head.Investigators found the child’s body as they sifted through rubble.DiMaggio and 16-year-old Hannah Anderson exchanged about 13 calls before Hannah was picked up from cheerleading practice on Aug. 4. Both phones were turned off, and the home burned several hours later.DiMaggio, 40, was like an uncle to the children and close to the parents for nearly two decades. The warrants describe how DiMaggio took Hannah on multiday trips, most recently to Malibu and Hollywood.Hannah Anderson was rescued when FBI agents killed DiMaggio in the Idaho wilderness on Saturday, ending a six-day search that spanned much of the western United States and parts of Canada and Mexico. Hannah Anderson described on a social media site how she survived captivity and how she is coping with the deaths of her mother and brother.