Things are back to normal today on the Upper Iowa University in Fayette after a case of mistaken identity put the campus on lockdown Thursday. The incident happened late Thursday morning. An off duty Independence police officer who had been invited to the campus as a guest was on campus in plain clothes, but wearing his pistol in a holster.

The officer was seen by student who was unaware of the officer’s identity. The student called security and local law officers were called and the campus was locked down as a precaution. The lockdown included an e-mail alert and a sweep of the campus.

The all clear was issued shortly after the officer’s identity was confirmed. Upper Iowa had held a mock bomb threat exercise on April 14th as a drill, just two days before the Virginia Tech shootings.