Based on the price of gold, the affidavit said, the estimated value of the gold exceeded $40 million. Investigators also seized nearly three dozen luxury watches, many of them Rolexes.

The court papers do not indicate why Mr. Rush appears to have kept so much gold, and $2 million in U.S. currency, in his home, or what work project would have required him to amass such wealth.

Greed hasn’t entered into their motive analysis?