DENVER (KCBS/AP) — Colorado regulators have issued an $8.9 million fine against Uber’s parent company, Rasier LLC for allowing employees with serious criminal or motor vehicle offenses to work for the company.

READ MORE: VIDEO: Juvenile Arrested In Brazen Carjacking From Richmond Auto Dealership

The Colorado Public Utilities Commission said Monday that it launched an investigation into the ride-hailing service last year after an Uber driver was accused of assaulting a passenger in Vail.

Within the last year and a half, the commission says it found that nearly 60 Uber drivers were allowed to work in Colorado despite having previous felony convictions, including a former prison escapee, major traffic violations or problems with their driver’s licenses.

READ MORE: UPDATE: Bay Area Counties Pausing Johnson & Johnson COVID-19 Vaccine Shots; State Continuing With Plans To Reopen On June 15

Last week, two women who said they were sexually assaulted by Uber drivers filed federal lawsuits in San Francisco faulting the company’s background checks.

Uber didn’t immediately respond to a request for comment.

MORE NEWS: San Leandro Police Arrest 2 In Bank Parking Lot Thefts
TM © ENTERCOM 2017 and © Copyright 2017 CBS Radio Inc. and its relevant subsidiaries. CBS RADIO and EYE Logo TM and Copyright 2017 CBS Broadcasting Inc. Used under license. All Rights Reserved. This material may not be published, broadcast, rewritten. The Associated Press contributed to this report.