DENVER ( CBS4) – Denver police officials updated CBS4 on a controversy that spawned an investigation within the department.

In January, CBS4 investigator Brian Maass learned of approximatedly 1,000 DPD crime reports were downgraded that essentially removed them from official reporting requirements and in turn improved the departments crime statistics.

READ MORE: Eastbound Lanes Of I-70 Closed In Wheat Ridge For Rollover Crash

(credit: CBS)

Those reports, which spanned several years, were later reviewed.

READ MORE: COVID In Colorado: Vaccines Available Before Every Event At Ball Arena In December

Several DPD sources said the type of cases that were reclassified ranged from property crimes to serious crimes like assaults and other violent crimes against citizens.

DPD officials told CBS4 on Wednesday they completed their investigation and determined there were no policy violations, and no disciplinary action was taken.

MORE NEWS: 18-Year-Old Man Shot, Killed In Thornton

They add all investigative sergeants within the department will be required to receive additional training in coding and classifying their cases.