Why the delay? the police likely did not wish to disclose evidence
I’d like to think that it was planned that way. My guess is the cops had a pretty good idea of what happened soon after the incident. What better way to make all of the thugs and the outa town race baiters look like frigging indiots than to let ‘em make asses out of themselves for a few days and then lower the boom. I’d say the coppers sandbagged these guys pretty good.