Whether or not there’s another suspect is- and should be, legally speaking- irrelevant.

They shouldn’t need another/better suspect to release him, or drop charges against anyone for that matter.

Lack of a better suspect isn’t evidence that he did it- but lack of evidence that he did is all that should factor into his release.

Otherwise, the message being sent is that *someone* has to pay, even if it’s someone whose primary reasons for being a suspect are general statistical probability, and a tingle in the gut of some Ray-Ban clad mustache.