Milwaukee County Circuit Court judge Hannah Dugan is accused of helping an undocumented immigrant sneak out a juror door in her court so he could avoid arrest, according to a complaint filed in U.S. District Court.

The criminal complaint states that the jury door leads to a "non-public area of the courthouse."

The criminal complaint cites a witness who saw Eduardo Flores Ruiz, who is undocumented, sneak out the door.

"Judge DUGAN commanded Flores-Ruiz's attorney and the male to leave through a backdoor of the courtroom. Attorney B then saw Judge DUGAN escort Flores-Ruiz's attorney and the male through a non-public door near the courtroom's jury box. Shortly thereafter, Judge DUGAN came back to the courtroom and conducted hearings on that morning's docket," read the complaint.

"Later that morning, Attorney B realized that Flores-Ruiz's case had never been called and asked the court about it. Attorney B learned that Flores-Ruiz's case had been adjourned. This happened without Attorney B's knowledge or participation, even though Attorney B was present in court to handle Flores-Ruiz's case on behalf of the state, and even though victims were present in the courtroom," it also read.

The FBI arrested Dugan on Friday and charged the judge with obstructing a proceeding before a U.S. federal agency.

A preliminary hearing and arraignment is scheduled for May 15.