A University of Idaho professor sued a TikTok poster for defamation after she published videos accusing the professor of killing four students in an off-campus home last month.

Ashley Guillard, a self-styled internet sleuth with roughly 108,000 TikTok followers, has posted dozens of videos in which she accuses Rebecca Scofield, the chair of the school’s history department, of orchestrating the four students’ killings. She says she based the accusation on tarot card readings.

Authorities have not named a suspect in the case, which has gained national attention, but they suggested the students were stabbed to death, likely while they slept in their beds. There is no known evidence connecting Scofield to the killings.

In a complaint filed in Idaho’s federal district court on Wednesday, Scofield said Guillard’s TikTok videos were false and that she did not comply with two cease-and-desist letters demanding Guillard take down the videos and issue an apology.