Two of the men were also found guilty of obstructing an investigation into arson attacks on an Ikea store in Vilnius, Lithuania, and a large market hall in Warsaw.
The Warsaw-Praga District Court sentenced Pavlo T. to five-and-a-half years in prison, Serhii R. to two-and-a-half years, and Vladyslav Y. to one year and four months, according to National Public Prosecutor’s Office spokesman Przemysław Nowak.
Their last names were withheld under Polish privacy laws.
The verdict is not final and may be appealed, state news agency PAP reported.
Prosecutors said the men belonged to a group accused of carrying out acts of sabotage and arson targeting large commercial buildings across the European Union.
Two of the convicted men also helped another suspect, Serhii Chalyi, flee Poland after the May 2024 fires.
They arranged his accommodation, helped him buy airline tickets and transported him through the Czech Republic to Austria, reporters were told.
The investigation is part of a broader probe into an alleged Russian-directed sabotage network responsible for a series of arson attacks in EU countries.
Those include the April 14, 2024 fire at an OBI store in Warsaw, the May 9, 2024 fire at an Ikea store in Vilnius, and the May 12, 2024 blaze that destroyed the Marywilska 44 shopping centre in Warsaw.
Prosecutors said the Marywilska fire was caused by arson ordered by Russian intelligence, though the direct perpetrators have not been identified.
Investigators have charged several other suspects, including Daniil B., Oleksandr H., Oleksandr V., and Chalyi.
According to prosecutors, Chalyi led the group and coordinated sabotage operations in Poland, Lithuania and other EU countries.
He remains at large and is wanted under a European arrest warrant and an Interpol Red Notice.
Nowak said the group’s actions were aimed at spreading panic and destabilising public order in EU member states.
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Source: IAR, PAP