LEWISTON – A Lewiston lawyer is facing possible suspension for having sex with a client, failing to return phone calls, overcharging clients and skipping court dates.

The Board of Overseers of the Bar has ordered Charles Williams III to appear before the state supreme court for trial.

Williams, 29, opened an office in Lewiston after moving from Massachusetts. Since then, he has gained a reputation as a civil rights lawyer and has represented several victims of racial discrimination.

His clients include three Sudanese immigrants who are suing the Portland Police Department for $100 million.

A two-day public hearing to address the complaints was held last week after a grievance panel determined there was enough reason to believe Williams was guilty of several violations.

The decision to send Williams to trial before the state’s highest court was made by a three-member panel appointed by the Board of Overseers.

Created by the Supreme Judicial Court in 1978, the board is responsible for handling complaints of ethical violations against the state’s 4,000 lawyers.

J. Scott Davis, a lawyer for the Board of Overseers, said only lawyers facing the most serious allegations go before the supreme court.

To prevent any further harm to Williams’ remaining clients, the Board of Overseers has asked the supreme court to temporarily bar Williams from practicing law. There is no time frame for a ruling.

Williams could not be reached immediately for comment. Telephone service to his office has been temporarily disconnected.