I suspect St Loo did something similar to LA: they cooked the books. Years ago, the Los Angeles police refused to take reports of crimes, claiming a non-existent budget shortfall as the reason. To no-ones surprise, crime did dramatically decrease - in the reports. Murders were a bit harder for the pencil-whippers, as it was difficult to ignore all those nasty corpses leaking all over the place. LAPD, affectionately known as LAP Dogs, had to report that murders were higher that period. The Chief at that time failed in his bid to become mayor, but soon became a much loved and corrupt inner city city councilman.
Here in the Loo - Chief Dotson was quick to blame it all on the official whipping boy of failing gubermints everywhere: Itz da guns!
Dotson also attempted a run for mayor, largely on his record as a "crime fighter." However, the hard-left city board of aldermen vowed to fire him from his top-cop job if he ran. He quit the race. He'd have been a poor choice for mayor - the other likely candidates are worse.