A Pennsylvania man indicted last month for his role in the Capitol riot discovered a stunning piece of evidence was being used against him in court: an unopened Lego set of the U.S. Capitol building that federal authorities found in his house.

Yes, you read that correctly: FBI investigators seized Robert Morss’s Lego set during a raid on his house and later claimed in court filings that it had been fully constructed. Though prosecutors didn’t say this outright, the implication was that this Lego set had something to do with the 27-year-old’s decision to storm the Capitol building on Jan. 6.