Over the past few weeks several seasoned assistant district attorneys have either resigned from the Philadelphia District Attorney’s Office, or have announced plans to leave, according to multiple sources familiar with the office.

Since the beginning of March, at least nine prosecutors have decided to part ways with the office, several sources have told The Legal. The departures include the former chief of the northwest bureau, a homicide prosecutor who recently won a conviction against a man who shot a city police officer, and an assistant chief at the office’s special investigations unit.