(KAIR)--A Saturday afternoon explosion at Atchison's MGP Ingredients causes no injuries, but leaves apparent damage to one of the company's structures. 

It happened shortly before 5:00, with Atchison Fire Crews rushing to the scene, joined by Atchison Police, EMS, and Westar Energy. 

Authorities say the facility, located at 13th and Commercial Streets, was not occupied at the time of the explosion, which ripped through the west wall, leaving the facade, and other debris, covering the adjacent sidewalk. 

The building is identified as a warehouse for the company. 

Although flames were not visible on the outside of the structure, fire crews, complete with aerial ladder truck, continued to work the scene as afternoon turned to evening. 

The investigation into what caused the explosion is ongoing. 

Atchison-based MGP is a distiller of spirits and specialty wheat proteins and starches.