A USC professor was detained by police after she told her class there was an active shooter when there wasn't one

The University of Southern California locked down on Monday after reports of an active shooter on campus, The Washington Post reported.

The one-hour campus-wide lock down occurred after an adjunct professor told her class there was a shooter. Police arrived at the Los Angeles, California school but found no threat or crime of any kind.

"It was reported a faculty member during class falsely told her students there was an active shooter in the building," Department of Public Safety Chief John Thomas told the Daily Trojan. "The faculty member has been detained by the LAPD."

The announcement shook the campus of 44,000 as it came on the heels of a mass shooting in Las Vegas which killed more than 50 people in the deadliest shooting in modern history.