"She had told me on a couple of occasions that (...) he walked around at night and she said that she could see his shadow standing at her door," Connie Jones is quoted as saying. "She said, 'Nana, he scared me. I'm afraid he's going to come in there.'"
Adkins and several other people are considered persons of interest in the 13-year-old's disappearance on Dec. 27, Senior DPS Trooper Sparky Dean said.
Court documents signed on Jan. 7 revealed Adkins' changing stories, suspicious comments, and disturbing hobbies uncovered by investigators through searches, questioning and polygraphs.
"Ever since this has happened, he's been my top priority as a suspect. I've just always had an eerie feeling about him (...) a gut feeling that he's not a trustworthy person," Jones told ABCnews.com.
Investigators have followed up on more than 250 leads in the case, Dean said.