Sgt. John Urquhart, of the King County Sheriff's Office, says officers quickly identified a suspect from tips received after surveillance video of Saturday's robbery "went viral."
The man is seen in the video telling White Center Shell station owner John Henry: "I'm robbing you, sir."
He takes $300, apologizing and saying he has bills to pay and children to feed. If he ever gets back on his feet, he tells Henry, he'll pay the money back.
Urquhart did not identify the 65-year-old man arrested Monday at a residence near the robbery site. The suspect has convictions for armed robbery and forgery.