GEORGETOWN - The driver was weaving back and forth along a major P.E.I. highway narrowly missing oncoming cars.
Headlights were flashing and horns were honking on that June 15 night around 10 p.m.
It was on Route 2, near Mount Stewart, and a driver in the car behind the intoxicated operator made a phone call to police.
But instead of standing down, the driver who phoned 911 continued to follow the erratic driver.
"The complainant followed her and stopped when she pulled off the highway and pulled into a driveway,'' said crown prosecutor Lisa Goulden in provincial court here Thursday.
But the justice seeker didn't stop there.
He blocked the entrance to the driveway, walked up to the car and took the keys out of the ignition.
"When the police arrived, the intoxicated driver said she was trying to get home but police soon realized she was travelling the wrong way,'' offered Goulden.
Provincial court Judge Nancy Orr said the unnamed complainant took a "great deal of concern" in the incident while waiting for police.
Mary Shannon Labobe, 30, of Bristol, facing her first impaired driving charge, was sentenced to five days in jail and fined $1300.
A court official said while Islanders regularly cell phone in tips about drunk drivers, it's unusual for someone to intervene and take action.