BANGOR, Maine — A Winter Harbor woman waived indictment Tuesday and pleaded guilty in U.S. District Court to stealing more than $1,600 from money order payments while working as a relief postmaster in Sullivan.

Sandra Melnick, 52, of Winter Harbor pleaded guilty to one count of theft of public money, according to the U.S. attorney’s office.

Between May 19 to Sept. 12, 2014, Melnick issued a series of money orders without reporting the sale or tendering the money to the U.S. Postal Service, a press release issued Wednesday by federal prosecutors said. Many of the money orders were cashed by recipients before Melnick reported them as sold.

When postal service investigators audited the defendant’s accounts, there still were three previously cashed money orders outstanding.

A sentencing date has not been set.

Melnick faces up to 10 years in prison and a fine of up to $250,000. She is expected to be ordered to pay restitution.

Watch for updates.