The PoPo would seem to have had enough time now to check Mustapha Kharbouch out and clear him.
Yes. He may have come forward and said he was the poor sap walking around, but was no darn killer! Or LE is wait until the evidence is hefty enough to make an arrest without having to backpaddle, if that's the case.
Either which way, the public at large doesn't need the information for the time being.