The Federal Bureau of Investigation opened a probe Thursday into a violent threat made against Black community members at UCLA which UCPD deemed non-credible. 

The threat – which was also sent to people at the University of Southern California – referenced the stabbing of Iryna Zarutska, a Ukrainian woman who was allegedly murdered in August by a Black man, according to Morning, Trojan. Multiple Historically Black Colleges and Universities across the country received similar threats, according to the Associated Press. 

Steve Lurie, the associate vice chancellor for campus and community safety, said in a written statement that UCPD and “partner law enforcement agencies” deemed the threats non-credible. 

Jeffrey Chobanian, the acting captain of the UCPD administrative bureau, said in an emailed statement that a threatening letter was sent to UCLA and at least 15 other universities. He added the letter’s sender was never near the UCLA campus. 

“Our investigation confirmed that the individual was never near UCLA, and there was no threat to the campus,” Chobanian said in the statement. 

UCLA’s Afrikan Student Union was not aware of any threats made against any of its members as of 7 p.m. on Thursday, said Maleeyah Frazier, the chairperson of ASU, in an emailed statement.

The HBCUs that received threats canceled classes, ordered lockdowns and increased security, according to AP. HBCUs that did not receive threats also announced that they would be tightening security. 

The threats came amid heightened fears of political violence after right-wing conservative commentator Charlie Kirk was shot dead Wednesday at an event at Utah Valley University. It is currently unknown if the threats and Kirk’s shooting were connected. 

UCPD has temporarily increased patrols on UCLA campus out of an abundance of caution, Lurie said. 

“The safety and well-being of our students, staff, and faculty remains UCLA’s highest priority,” he said in his statement.