This footage released by Seattle Public Public Affairs shows the moment an elderly man is pulled over for driving without headlights.
The police officer is seen returning to the pensioner's car after checking his drivers licence, and about to let him off with a warning.
However Seattle Police Officer Nic Abts-Olsen is recorded asking these questions; "What is that? Are you kidding? You're about to snort coke on the side of the road?".
The 73 year-old man was arrested and charged with possession of narcotics.