PIEDMONT, Oklahoma - Firefighters responded a fire Monday morning at a dog food manufacturing plant in Piedmont, fire officials said. 

According to authorities, firefighters responded around 4:30 a.m. near Piedmont Road N and Madison Road NE. 

The fire was contained completely inside the building. Firefighters said the only significant damage belonged to dog food and some machinerey.  

No injuries were reported. 

This is a developing story.