Nineteen fire brigades were deployed to the scene of the fire, which broke shortly before 1 a.m. in the village of Klonowo, Działdowo County, an officer on duty at the Provincial Headquarters of the State Fire Service told reporters.
Two large production halls were engulfed in flames when the firefighters arrived, Polish state news agency PAP reported.
Police have opened an investigation to determine the cause of the fire, the latest in a series of incidents affecting industrial facilities across Poland in recent weeks.
Poland's Prime Minister Donald Tusk last month warned of the likelihood of increased sabotage or diversionary tactics by Russia, urging a heightened state of readiness among security services.
His warning followed a spate of high-profile incidents, including a massive fire at a shopping center in Warsaw, which the government has been investigating for potential links to foreign sabotage.
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Source: PAP