Director of National Intelligence Tulsi Gabbard said Tuesday that more than 100 intelligence officers will be fired for participating in sexually explicit messages in National Security Agency chat rooms.

The chats had been set up to discuss sensitive security matters. But a group of employees used them for discussions that contained sexual themes, intelligence officials said this week.

Director of National Intelligence Tulsi Gabbard accused the fired employees of using government platforms to engage in “horrific behavior.”