So when did the DA get those requested records?
I am curious - how long did the innocent student remain in jail after the DA found the evidence that indicated he didn't do it?
I don't know that it happened in this case, but I have heard of prior cases where a suspect is held for several days after being found innocent by the investigators - and it always distresses me significantly (well, ok, there was one case I heard about where it wasn't so bad - the suspect was informed that he was found innocent, but would he mind staying for a bit longer, to give them an edge on tracking down the real criminal - and he was compensated for his time.)
However, in this case, I think it was shoddy work all along, in any event - the student's actual call should have been recorded as 2:12am EDT by the school's phone system. Of course, with due dilligence, they would have still arrested the kid, but after having found the message that he *did* leave, they would have let him go an hour later.