Court Papers: Janitor ‘Panicked’ After Finding Gun


A found gun, a polygraph test and an elaborate cover-up.  Court papers outline what led up to the arrest of a Sioux Falls School District janitor.

The affidavit says Joseph Croal was working at the Career and Technical Education Academy on Friday night.  

He told police he found bullets near a garbage can in a men’s bathroom.  The court papers say he noticed a footprint on the wall and fingerprints on a ceiling tile, so he checked it out and found a loaded gun hidden in the ceiling. 

Authorities interviewed dozens of people and eventually gave Croal a polygraph test.  

That’s when court papers say he admitted he’d found the gun and bullets in a car that students were working on.  He was worried that his fingerprints were on the gun, so the documents say he decided to try to cover it up.

Croal is accused of possessing a dangerous weapon in a school and lying to authorities.

Police and the district say students were not in danger at any point. 

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