305 A.2d 701 Commonwealth v. Kates, Appellant. Commonwealth v. McClellan, Appellant. Allen, Petitioner, v. Reed. Supreme Court of Pennsylvania.January 14, 1972. May 8, 1973. Criminal Law — Sentence — Probation — Violation hearing — Hearing prior to trial for criminal charges which are based on the same activities which gave rise to the alleged probation […]