Two former top aides to Probation Commissioner John J. O’Briencq have been granted immunity from prosecution in exchange for testifying against him in federal and state corruption investigations, a state prosecutor disclosed in court on Tuesday, part of a growing number of probation officials and others who have agreed to cooperate with the sweeping investigation. Prosecutors confirmed on Tuesday that Edward P. Ryan, who O’Brien’s legislative liaison, as well as former deputy commissioner Francis M. Wall, are cooperating with the prosecutors.
For more from BostonGlobe.com, sign up or log in below
To continue, please sign up or log in to BostonGlobe.com
Access the full articles and quality reporting of The Boston Globe at BostonGlobe.com
Sign up
Unlimited Access to BostonGlobe.com for 4 weeks for only 99¢.
Are you a Boston Globe home delivery subscriber?
Get FREE access as part of your print subscription.
BostonGlobe.com subscriber
Click to continue reading this article or to log in to BostonGlobe.com.


