The Polish secret services launched an investigation into the incident, which occurs against a backdrop of Poland's ongoing support for Ukraine and concerns about Russian espionage.

This development follows the startling defection of a Polish judge to Belarus, who sought political asylum after fleeing due to alleged espionage charges against him.

The judge, identified as Tomas Schmidt, was closely associated with the ruling Law and Justice Party (PiS) and had access to sensitive information.

His departure and the discovery of the devices have heightened security concerns in Poland, amidst a tense political climate following the recent change in government from the nationalist Law and Justice Party to a more liberal central administration.