If the evidence is for my brothers case can it be used to open a case against me right away or would that happen after his case has been resolved?
If the evidence you are referring to helps the state prove your brother's guilt on his charges they will certainly make use of it. It will not come back on you unless they conclude that it shows you are also criminally culpable. You should absolutely consult with an attorney.
It could happen immediately. It depends on the evidence and the facts of his case.
Seth Weinstein, Esq.
Practicing throughout Southern California