The mysterious package put the services on high alert. The prosecutor's office closed the investigation.

On September 30, a civilian employee at the Military Gendarmerie in Nowa Dęba received a letter from Germany, which caused respiratory issues for three individuals after opening. They were hospitalized but showed no signs of poisoning or contact with toxins. Investigations ruled out the presence of chemical weapons or biological contamination. The letter was unregistered, making it impossible to trace its exact origin, although it had a return address linked to a homeless women's support facility in Munich. The investigation was closed on November 10, as no criminal act was identified, and experts confirmed no causal link between the letter and the health issues experienced.