PORTLAND, Maine — A 44-year-old Rockland woman was indicted Wednesday by a federal grand jury on a charge that she defrauded the bank she worked at for more than $400,000.

Shauna L. Quinn will be arraigned Tuesday afternoon in U.S. District Court before Magistrate Judge John Rich III.

Quinn had been arrested Dec. 14 on a bank fraud complaint filed by the U.S. Attorney’s Office. She has been free on bail since Dec. 18 with the condition that she surrender her passport and agree to medical or psychiatric care as directed by the federal supervising officer who handles her case.

According to the complaint filed last month, Quinn allegedly created home equity lines of credit and loans in the names of family members between July 2008 and June 2011 totaling nearly $540,000 while working for Rockland Savings Bank in Rockland.

The maximum possible penalty for bank fraud is 30 years in prison to be followed by five years in supervised release. The penalty also allows for a fine of up to $1 million or twice what was gained or lost, whatever is greater.

She was fired in June 2011.

The case started in the summer of 2011 when the bank reported the alleged theft to the Rockland police. The case was then turned over to the FBI. Quinn’s name became public last year when her brother Christopher Wellman and his wife, Tara Wellman of Hope, filed a civil lawsuit in Knox County Superior Court against the bank. The lawsuit, much of what has been ordered dismissed on an order by Justice Jeffrey Hjelm, claimed that the bank was negligent for failing to account for the wrongful transactions of an employee who was not named in the suit.

Quinn is represented by attorney Walter McKee of Augusta. Assistant Attorney General Donald Clark is prosecuting the case.