To add insult to injury, Smith — as a commissioner — had successfully pushed for a citywide bike registration program to help police track stolen bikes. But when he contacted police to report his own stolen bike, he had to admit it was not registered.
That's basically the very definition of irony right there.
M-W.com agrees.
(1): incongruity between the actual result of a sequence of events and the normal or expected result (2): an event or result marked by such incongruity