The incident occurred during the night of October 30–31. Officers from KP PSP Lwówek Śląski:
(…) at 11 p.m., a report was received by the Command Post of the District Commander of the State Fire Service in Lwówek Śląski concerning a fire in an abandoned building in Niwnice.
And they add:
Upon arriving at the scene, it turned out that the entire building was engulfed in flames.
Fortunately, it was an uninhabited building. The danger was eliminated; fortunately, no one was injured.