A 30-year-old New York woman is pleading guilty to running an illegal marijuana grow operation in Somerset County.

Prosecutors say Jiamin Liao admitted to federal agents that she grew marijuana in Madison and stored it in Norridgewock, and pleaded guilty Monday U.S. District Court in Bangor.

They say Investigators found 551 marijuana plants at the Madison property, along with chemicals and a variety of grow equipment.

Liao was located at her property in Norridgewock, where she was found with approximately 30 pounds of processed marijuana.

Prosecutors say she further admitted to packaging the marijuana into one-pound bags and storing the product at the property in Norridgewock.

Liao faces up to 20 years in prison and a maximum fine of $500,000 when she’s sentenced.

Neither Liao nor her property was licensed through the Maine Office of Cannabis Policy.