UPDATE 9:00 a.m.
Michael Grieco has submitted his letter of resignation via e-mail effective immediately. He's accused of campaign finance law violations.
A Miami Beach official will admit to wrongdoing and resign.
Commissioner Michael Grieco is expected to plead guilty to violating campaign finance law and submit his resignation this morning. A source tells the "Miami Herald" Grieco will serve one year of probation and will be banned from running for public office in that time.
Grieco was elected four years ago and had already abandoned plans for re-election.
He issued this letter this morning: