Uber has run afoul of the law, with an $8.9 million fine assessed in Colorado for allowing unqualified drivers to take the road.

In a recent investigation by the Colorado Public Utilities Commission, it was discovered that 59 drivers held disqualifying convictions on their records. Among the 59 drivers include 12 previously convicted with felonies, 17 cited for moving-vehicle violations and 3 carrying the wrong driver’s license after a drunk driving conviction.

“[Public Utilities Commission] staff was able to find felony convictions that the company’s background checks failed to find, demonstrating that the company’s background checks are inadequate,” said Doug Dean, director of the Public Utilities Commission. “In other cases, we could not confirm criminal background checks were even conducted by Uber.”

In response, Uber released a statement to Fortune magazine acknowledging the issue, attributing it to a process error that did not meet Colorado’s ridesharing rules. According to Colorado law, those with felony, alcohol, drug, sexual, or major traffic violations cannot work for any ride-sharing companies. The actual fine of $8.9 million was based on a $2,500 a day penalty for each day an unauthorized driver drove for Uber.

“This error affected a small number of drivers and we immediately took corrective action,” an Uber spokesperson said. “Per Uber safety policies and Colorado state regulations, drivers with access to the Uber app must undergo a nationally accredited third-party background screening. We will continue to work closely with the CPUC to enable access to safe, reliable transportation options for all Coloradans.”

As for next steps, Uber can start paying the fine with a 50 percent initial payment or contest the ruling with a hearing.

Uber has long been a hotbed for drivers with bad behavior with garnered public perception for perceived, continual skirting of its background check obligations. Within the past two years, Maryland and Massachusetts regulators removed close to 12,000 ride-sharing drivers from the road for not adhering to state standards (despite passing Uber and Lyft’s background checks).

Most recently, two women filed a federal lawsuit, suiting Uber for sexual assault by its drivers. The problem is even international in scope with London initiating an all-out ban due to excessive driver complaints and a perceived disregard for local regulations.