By CBS13 Staff

RIVERBANK (CBS13) — Authorities say four people have been arrested in an underage alcohol furnishing sting in Riverbank.

The Stanislaus County Sheriff’s Department undertook the “Decoy Shoulder Tap Operation” on Friday. Using a minor being monitored by a law enforcement officer, the decoy stands outside a store and asks people going inside to buy them alcohol.

READ MORE: Trailblazer Flew Through Glass Ceilings As First Female African American Pilot To Fly U-2 Aircraft

Agents then arrest and cite the person if they agree to buy the minor the booze.

READ MORE: Pressure Behind The Wheel: Sacramento Mover Drove Historic Victorian Mansion Through San Francisco

In total, the sheriff’s office say four adults were arrested in Friday’s operation. The suspects face a minimum $1,000 fine and 24 hours of community service.

More from CBS Sacramento:

MORE NEWS: Early COVID Patient Remembers Military Quarantine After Cruise Ship Outbreak

The names of the people arrested, as well as the specific store they were arrested outside of, have not been disclosed.