Most police services have high-risk offender units or other units of that type. We call ours the “crime abatement strategy”, in which we do our best to identify offenders who are out on bail and pose the highest risk to the community. We'll do proactive compliance checks to ensure that they are complying with those conditions. When they are found not to be in compliance, the appropriate course would be to arrest them, if you can locate them.
I will highlight the case when Constable Pierzchala was killed. Mr. McKenzie cut off his GPS device. He was nowhere to be found. Where does a police officer even begin to look for somebody who does not want to be located and has disregarded a GPS monitoring device that was part of their conditions?
Extensive efforts were undertaken by two police services of jurisdiction, including taking out two warrants for the arrest of Mr. McKenzie. Prior to their being able to apprehend him, despite extensive efforts, he had the opportunity to murder my officer, because he was released from custody.