leak video show group probation officer brutally beat teen inside california detention center.the video leak witness la someone inside probation department show four probation officer beat teen supervisor look on.according witness la video record inside barry j. nidorf juvenile hall locate sylmar california.the video sound show 17-year-old talk supervisor moments attack footage show teen threaten officer way.a second officer rush hallway begin hit teen behind officer rush room teenager tackle throw onto cell cot.the officer pile top video show punch kid point stomach head upper body long cot.the supervisor remain stand near doorway watch entire incident unfold.according witness la supervisor appear oversee beat reportedly facility officer day mean like watch commander police sheriff station guy charge whole place.about minute beat another uniform officer see enter cell watch brief second exit room leave officer continue beat minor charge.witness la report person second supervisor.the beat last nearly two minutes.after see briefly nurse teenager take hospital treat multiple injuries include bruise black eye swell abrasions also treat sprain.witness la release entire video portion publish abc 7. watch footage via youtube image credit video screen capture via abc news youtube leak video show probation officer brutalize teen ca detention center video