A Travis County judge has ruled that attorneys for the Transgender Education Network can question the people behind the mystery mailers that have created a lot of anger and confusion in Texas just days before the midterm elections.

Transgender Mailer Mystery What we know: The mystery mailers addressed to students in thousands of Texas households are now the subject of both a criminal investigation and potential legal action.

Sarah Stogner, a Republican district attorney from West Texas, opened the criminal investigation after she said State Rep. Jeff Leach's requests for Texas Attorney General Ken Paxton to investigate the mailers went ignored.