That's a very good question, Mr. Chair.
The Correctional Service of Canada supervises the offender. If there was an issue in relation to a breach of a condition or abstaining from drugs and/or alcohol, the parole officer who was supervising the offender would make note of it. They can cancel the parole at that point. The offender could go back into the institution, and then the board would have to convene another board to decide whether to cancel the suspension of that offender's parole, or they could revoke the original decision. Depending on the seriousness of the offence, if it was a minor breach, the board could make the decision to cancel the suspension and the offender would remain in the community, obviously under close supervision by the CSC official.