Thousands marched in Mexico’s capital Monday night demanding justice for Jesús Ociel Baena, an influential LGBTQ+ figure who was found dead at home in the central city of Aguascalientes after receiving death threats.

Baena was the first openly nonbinary person to assume a judicial post in Mexico, becoming a magistrate in the Aguascalientes state electoral court, and broke through other barriers in a country where LGBTQ+ people are often targeted with violence.

The state prosecutor’s office confirmed that Baena was found dead Monday morning next to another person, who local media and LGBTQ+ rights groups identified as Baena’s partner, Dorian Herrera.

State prosecutor Jesús Figueroa Ortega said at a news conference that the two displayed injuries apparently caused by a knife or some other sharp object.