A grand jury doesn't convict. The grand jury hears evidence and decides if there is enough evidence to bring an indictment (official charges). The case would then start the judicial process, a person is arraigned on charges and either squeals for a deal or goes to trial.
Possible, but a subject of investigation isn't required to be informed a grand jury is meeting to consider a case against them. Usually targets of federal investigation are notified after the GJ has met, and then they have the chance to start making deals.
A grand jury doesn't convict. The grand jury hears evidence and decides if there is enough evidence to bring an indictment (official charges). The case would then start the judicial process, a person is arraigned on charges and either squeals for a deal or goes to trial.
Or, the person in question decides to squeal and cop a plea deal BEFORE the GJ indictment is officially announced.
Which, I believe is what's happening here.
Possible, but a subject of investigation isn't required to be informed a grand jury is meeting to consider a case against them. Usually targets of federal investigation are notified after the GJ has met, and then they have the chance to start making deals.