Maryland Gov. Martin O’Malley said on Thursday that he hasn’t decided what to do with thousands of dollars in campaign contributions from a well-connected donor who pleaded guilty to not paying $4 million in employment taxes.

Richard Stewart, a member of O’Malley’s redistricting committee and chairman of the governor’s re-election campaign in Prince George’s County, pleaded guilty earlier this month to not paying federal income taxes for a company he owned.