The incident occurred on Saturday after 2:00 p.m. in one of the buildings on aleja Tysiąclecia. The basement rooms were filled with smoke. When firefighters arrived at the scene, it turned out that there was a significant concentration of carbon monoxide in the rooms—over 300 ppm. The firefighters worked wearing breathing apparatus. The building’s residents were evacuated.
The smoke most likely came from one of the chimney cleanouts. Despite 25°C outside, one of the residents was burning fuel in the stove.
The building was ventilated, the furnace was cleaned, and people were able to return to their homes.