Poland concludes investigation into Russian drone incursion: some had Polish SIM cards

An investigation into a large-scale incursion of Russian drones into Polish airspace in September 2025 has been closed because those responsible could not be identified.

Source: Lublin District Prosecutor's Office; European Pravda, citing RMF24

Details: The military prosecutor's office spent months investigating the attack, trying to establish who was responsible.

Unfortunately, as prosecutor Marcin Kozak, a spokesperson for the Lublin District Prosecutor's Office, said, the investigation has been closed because the perpetrator could not be identified. Most of the case materials, including the justification for the decision, are classified.

"The investigation has been closed because it was not possible to identify the perpetrator of the crime, which constituted a violation of Polish airspace and thereby posed a threat to public safety," prosecutor Kozak said.

The investigation also examined the Polish military's response to the drone attack. The prosecutor's office unequivocally concluded that the military had responded correctly and in accordance with the procedures in force. The soldiers had the right to use military force and shoot down hostile objects. The investigation was also closed on this matter, as no violations were found.

One of the investigators' most surprising findings was the presence of Polish SIM cards in some of the downed drones. The investigators have not disclosed whether the cards had been stolen or illegally purchased, and this information is classified.

Background:

• During the first large-scale incursion of Russian UAVs into Poland on 10 September 2025, around 20 drones entered the country. Debris was found in various parts of the country, with some drones flying almost 300 km from the eastern border.
• On 13 September, NATO launched Operation Eastern Sentry in Poland in response to the incident.

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