UPDATE: Man arrested in connection to Sioux Falls porta potty fire

SIOUX FALLS, S.D. (KSFY) - Police have arrested a man in connection to a fire that destroyed two porta potties in downtown Sioux Falls.

Forty-eight-year-old Aaron Gruenewald was arrested Thursday morning.

Firefighters extinguished a blaze at the new Washington Square Complex early Thursday morning. No one was hurt, but two porta potties were destroyed.

Police say surveillance video showed a man walking into one of the porta potties, then the fire broke out shortly after he walked away.

Gruenewald was found a few blocks away. Police say he had a lighter in his possession. He faces one count of reckless burning and intentional damage to property.

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Original story:

No one was hurt, but two porta potties were destroyed in an overnight fire in downtown Sioux Falls.

The fire broke out around 1:20 a.m. at the new Washington Square complex on Main Avenue.

According to Sioux Falls Fire Rescue, a porta potty near the entrance to the first floor garage caught fire. The building's sprinkler system was able to stop the flames from spreading. Firefighters put out the blaze a few minutes after arriving.

No one was hurt in the fire. The fire triggered the building's alarm system, and residents had to wait outside on a rainy night for about 15 minutes.

Firefighters did not find any damage to the building, though two porta potties were destroyed.

The cause is still under investigation.