How long can a sentence be for probabtion violation?

My roommate has been on probation for 20 months of a 24 month sentence. His conviction was for a Alcohol related misdemeanor. Part of his probation was no alcohol consumption and no attending bars. He has not been arrested however he has been to a few bars seeming how he is a senior in college. ...

My son was picked up for a probation violation and I was wondering if there was a certain time that his probation officer has to contact him or how long he can sit in jail without any info on what is going on. He has a job and he takes medication for biopolar and he can not take all of the...