FALMOUTH — A Marstons Mills woman pleaded not guilty Tuesday in Falmouth District Court to embezzling more than $773,000 from her former employee, a North Falmouth marina, according to court documents.

Amy Griffin, 42, was brought into court on a warrant and released on personal recognizance on the condition she wear a GPS monitoring bracelet, the documents say.

She was charged with two counts of larceny of more than $1,200 by a single scheme, uttering a false check, and forgery of a bank note, according to court documents.

With help from Massachusetts State Police, an arrest warrant was served on Griffin Tuesday at Logan Airport in Boston, according to a statement from Falmouth police. Griffin was taken into custody after her flight from San Diego landed, police said.

Griffin was taken to the Falmouth police station and arraigned later that day, the statement says.

Griffin had worked for the Fiddler's Cove Marina, which is owned and operated by Safe Harbor Marinas, for the past 11 years as an office manager, according to a police report. Her position gave her full access to all the financial records as well as checks, the report says.

On May 11, the company’s treasurer observed a number of odd transactions in credit card refunds at the marina, the report says.

All of the large transactions came back to the same credit card, which was later observed on video being used by Griffin, police said.

A regional vice president for Safe Harbor Marinas told police the refund amounts were higher than most transactions that occur on a daily basis at the marina.

Records indicated that Griffin began issuing herself refunds from the company beginning in October 2016, the police report says.

On May 5, Griffin was seen removing two large bags from her office where all the financial records were kept, bringing them to her vehicle, according to the report.

Management noted that many records since 2016 were missing and believe Griffin took them to hide evidence, the report says.

Griffin issued herself credit card refunds totaling $766,455.49 and unauthorized checks totaling $7,031.85, according to the report.

She is scheduled to return to court for a pretrial hearing on Nov. 28.

— Follow Beth Treffeisen on Twitter: @BTreffeisenCCT.