Tim Davlin was found dead of a self-inflicted gunshot wound at his home on Dec. 14.
McDermott said another $203,750 went to the Mid-West Truckers Association. Davlin sat on the board of the organization, Illinois Secretary of State records show.
In total, more than $340,000 was taken from Ettelbrick's estate without authorization, said McDermott.
Davlin died the morning he was to show up at a hearing to give a financial accounting for Ettelbrick's estate.