When I inquired about the case, Leo Dunn, chairman of the Pennsylvania Board of Probation and Parole, wrote that he couldn't comment. Neither could the supervisors who kept Allen on the street. Dunn called the case a "tragic situation" and said that the board had launched an internal investigation to "ensure no policies were violated." Parole policies do not mandate that drug violations alone require automatic re-incarceration, he said, but he added that they "will review the case to see what lessons may be learned to improve the system."