(DailyProgress) - Federal authorities are asking Gov. Bob McDonnell's associates about previously undisclosed gifts given by a campaign donor to McDonnell's wife that total tens of thousands of dollars and include money and expensive designer clothing, according to people familiar with the inquiry.

The questions are part of broad federal and state investigations into gifts to the governor and his family and whether McDonnell took official action on behalf of anyone who gave gifts, people with knowledge of the investigation have said.

The probe already involves a $15,000 gift from wealthy businessman Jonnie R. Williams Sr., chief executive of a major McDonnell campaign donor, for catering at the 2011 wedding of one of McDonnell's daughters.

But the people with knowledge of the inquiry, who spoke on the condition of anonymity because of the sensitive nature of the investigation, say the scope is wider than just the wedding gift. The value and nature of additional gifts from Williams, including money provided in several checks, suggest that authorities are exploring a more extensive relationship between Williams and the McDonnells than previously revealed.