This story was updated to include an interview with Iowa State University Police Department Chief of Police Michael Newton.

The Iowa State University Police Department (ISUPD) is monitoring false reports of “an active shooter on campus,” according to the department.

After receiving two phone calls Monday morning, officers responded and found no “credible threat.”

ISUPD Chief of Police Michael Newton said at around 9:01 a.m., the first call claimed someone with a rifle was walking in Friley Hall. The second call, around 9:07 a.m., was “a very similar call,” claiming someone with a rifle was outside of Parks Library and gunshots had been fired.

“We were able to respond within seconds of these calls coming out,” Newton said. “Plus, we also have robust cameras in both of these facilities, so we were able to pull up cameras to see. So we were able to determine really rapidly that this was likely a hoax, which is also the reason we didn’t send an ISU Alert out.”

Newton said other universities had received similar types of calls over the last few days. 

In a press release, ISUPD said the calls may have been an instance of “swatting calls.” Swatting is a form of anonymous prank call to emergency services, and is often to draw a large police and emergency presence to a particular location. 

Newton said a full investigation with federal partners is ongoing.

“We will do everything we can to hold the person who did this accountable for their action,” Newton said.