I think the friends reached out to the police first, because they knew something was wrong right away. It’s been referred to the fact that Caleb was a creature of habit, plus the evidence of the uber delivery was still on the porch, his truck, keys, etc. were still there. I also think they may also know that he was on various on line sites gaming, dating, fishing, etc. and felt right away his disappearance may be related to something online, such as a stalker, meet up gone wrong, etc. It would explain why all the various agencies that are involved. The Assistant Police Chief has stated,
"I want the community to know we are still very actively involved in the investigation," Green said. "It may not be as visible as it was the first week where you see officers out combing through fields and riding motorcycles and bikes and whatnot. Most of the investigation now is going on behind the scenes. It has to do with looking into digital data, forensic computer examinations and things like that."
Corpus Christi Police gave a highly detailed breakdown of the Caleb Harris disappearance on Thursday, as well as the suspects they've ruled out.
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