An Iowa High School was put on lockdown Tuesday evening for a short time.

Dallas Center Grimes High School was put on lockdown during a volleyball game Tuesday evening when officials noticed a suspicious person walking along highway 44 near the school. The person reportedly looked to be carrying a rifle and a bullet proof vest.

After calling 911, the school’s doors were locked and officials were put on high alert for any suspicious activity that might occur. At the time of the lockdown, a volleyball game was taking place at the school.

Authorities eventually arrested Michael Jensen who is being held in the Polk County Jail on $100,000 cash bond.