Firefighters in Nagold-Iselshausen, Germany, alerted by an automatic alarm, responded to a blaze in the storage room of a plastics processing plant Tuesday morning, authorities said.

The first alarm sounded at 5:30 a.m. Encountering a large amount of smoke, first responders issued a warning to the community to keep windows and doors closed.

Stacked inside the warehouse were pallets loaded with plastic parts sealed in packaging material. Firefighters fought the flames for more than two hours before bringing them under control.

The air quality warning to the community was withdrawn at 7:50 a.m., a police press officer stated. Police took charge of the fire scene to investigate the possibility of arson.

Fire departments from Nagold, Calw, Iselshausen, Gundringen Schietingen, and Vollmaringen responded to the blaze, bringing nearly 80 firefighters.