Two ghost-hunting tourists and their guide were mistaken for burglars while exploring an abandoned Civil War-era building.

According to The Associated Press, police in Pennsylvania are investigating after a police officer mistook two tourists and a tour guide for burglars and arrested them. The officer reportedly passed by an old Civil War-era building in Gettysburg and saw flashlights inside. Thinking he was witnessing a burglary in progress, he went in, handcuffed, searched and detained the three ghost hunters at gunpoint.

It was later confirmed that the tour guide had permission to use the allegedly haunted building for tours.