Coon Rapids, MN (KSTP TV) – A prank caller convinced employees of a Coon Rapids Burger King to smash all of the windows of the restaurant to keep the building from exploding, Coon Rapids police say.

The incident happened Friday evening at the Burger King on the 2000 block of Northdale Boulevard.

According to police, employees received a phone call from someone claiming to be from the Coon Rapids Fire Department. The caller said the restaurant was pressurized and could explode, so the employees needed to break the windows to relieve the pressure.

The employees believed the caller and broke multiple windows, police say.

Police say they believe the call was a prank, and an investigation is underway to determine who made the phone call.

KFOR-TV reports the same thing happened at an Oklahoma Burger King on Friday night as well, costing the restaurant thousands of dollars’ worth of damage.