Lawrence Township police say that a threatening phone call made to Rider University prompted the school to issue a shelter-in-place protocol.

Police say that the call was made to the university’s Department of Public Safety Monday afternoon.

The details of that call were not immediately clear. But an email sent to Rider students stated that the school has received a threat “of an active shooter.”

Law enforcement officials searched the school and determined that there was not a threat on campus. The shelter-in-place was lifted around 2:30 p.m.

The incident comes less than two weeks after a shelter-in-place at Monmouth University. That school went under a shelter-in-place for several hours after it was reported that there was an armed person on campus

Police later determined that in that situation it was a student holding a curling iron.