Updated

A pizza feud outside Philadelphia turned ugly after a pizzeria owner was arrested for planting mice at a competitors' restaurant, MyFoxPhilly reported Monday.

Nickolas Galiatsatos, 47, owner of Nina’s Bella Pizzeria in Upper Darby, Pa., was allegedly caught red handed placing a bag of mice in the bathroom of another pizza place.

Upper Darby Police Chief Michael Chitwood labeled the incident as "food terrorism."

Police say Galiatsatos walked into Verona Pizza on Monday afternoon and was seen by two patrons asking to use the bathroom.

The owner of Verona's went into the bathroom and saw a footprint on top of the toilet, and alerted the patrons, who happened to be police officers.

The cops found the mice in a bag planted inside a ceiling tile.

Click here to read more nd view photos from MyFoxPhilly.