The urban security and the intervention unit will hit the streets to arrest the criminals after the interdepartmental investigation of a case.

A progress bar will show up during this process over their lockers. Once they finish their work, arrested criminals should spend some time behind bars in the guardroom cells. 

Sometimes you will see a warning symbol next to an orange progress bar, which will indicate that the unit who took the case was the wrong one. Don’t worry, they will do their duty, but it will take some extra time. Take in mind that this could happen regularly if the other units suffer overwork.
 
When the progress bar is green, it will take less time to be processed. Other cases could take more time but better rewards, so their pogress bars will be orange.

Don’t forget that officers will accomplish the mission faster if they have enough official vehicles!