The probe of Higgins was part of the fallout of a December 2009 inspector general's report questioning the pension eligibility of Michael Angelini, who until last month was chairman of the Gloucester County Democrats.
The report questioned how Angelini could have built up a pension worth about $100,000 a year when he appeared to be working as an independent contractor rather than a government employee in his numerous public jobs.
The Inspector General's Office referred additional names that arose during that investigation to the Division of Pension and Benefits, which sent out requests for information on 11 professionals to 41 government entities.