Originally Posted by MWM
I can't imagine they'd announce a press conference the day before if they were going to arrest him, they'd just do it. Only makes sense if they are not pursuing criminal charges.
For a high-profile defendant like this, the "arrest" is more of an arrangement to turn himself in for processing. Likely, his attorneys will be made aware of the decision and the DA will coordinate with them where this is to happen if an indictment is issued.