Letters from 16-year-old Hannah were among the items seized from DiMaggio's San Diego property, as were handcuff boxes, used condoms and incendiary devices, according to the warrants.
Authorities did not detail what the letters -- or another handwritten note -- said.
The documents released provided a glimpse into the nearly weeklong search for the 16-year-old Anderson and the slaying of her mother and brother, who were found dead Aug. 4 at DiMaggio's burning property.
Authorities allege DiMaggio -- so close a friend to the Anderson family that the children called him Uncle Jim --"tortured and killed" Hannah's mother and brother before kidnapping the teen, eventually taking her to a remote stretch of Idaho back country.
Other warrants showed an unknown person picked Hannah up from cheerleading practice the afternoon of Aug. 4. Phone records showed that prior to her phone and DiMaggio's phones being shut off, the pair called each other about 13 times, but authorities did not specify over what time period those calls took place.
In seclusion, DiMaggio's family is now trying to come to terms with allegations that the 40-year-old of kidnapping Hannah, but also the brutal murders of her mother, Christina Anderson, and 8-year-old brother, Ethan.
Spanswick said that while DiMaggio's family isn't trying to excuse what happened, it's important to them to try to find some sort of explanation to achieve a sense of closure.