Cllr Tim Wills, a representative for Marine Ward, has resigned his seat on Worthing Borough Council.
Cllr Wills is the subject of an ongoing investigation by the Council under its Code of Conduct procedures following remarks he is alleged to have made in an online forum run by an organisation called the Patriotic Alternative.
He had already been suspended by the Conservative Party pending an investigation.
In accordance with procedures the vacancy on the Council will be advertised on this website in due course.
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