A report presented to the Metra board shows former Executive Director Phil Pagano took at least $475,000 from the agency in vacation pay and forged the chairwoman's signature on two documents, the board said Friday.
Pagano, 60, committed suicide a week ago after epping in front of a Metra train.
He was suspended last month when Metra's board chair discovered her signature was forged on a document that authorized a vacation advance for Pagano.
That advance may have been worth up to $112,000.
The Cook County State's Attorney has opened a separate investigation.