The son of former District of Columbia Mayor Marion Barry has declined an offer from prosecutors to plead guilty to misdemeanor charges after an altercation at a downtown Washington bank.

The attorney for 34-year-old Marion Christopher Barry says his client allowed the plea offer to expire on Friday. Attorney Makan Shirafkan (MAH-kun shu-RAHF-kun) says he's preparing for trial, although he didn't rule out the possibility of a plea agreement in the future.

Barry is running for his late father's seat on the D.C. Council in a special election on April 28. Trial in the case is scheduled for May 20.

According to court documents, Barry threatened a bank teller and destroyed a security camera after he was told he couldn't withdraw money.