A complaint has been laid with Wellington City Council's top brass about former mayor Justin Lester releasing information after he was ousted from the job.
Councillor Diane Calvert has made the complaint to council chief executive Kevin Lavery and Mayor Andy Foster.
She has also emailed her councillor colleagues asking for their support to ensure what she considered "this subversive and bullying behaviour does not carry on".
The complaint is over an email she received from Lester's private Gmail address on Friday. She was forwarded her own email to a council officer from October 2018 when she requested advice on claimable expenses like mileage.
"It appears Justin Lester's email to me was intended for someone else. I emailed straight back and asked him for an explanation but have not had a response", Calvert said in her complaint.