Polish Prime Minister Donald Tusk has officially confirmed that the blaze was an act of arson orchestrated by Russian intelligence.

The Polish government claims to have evidence that the fire was an act of sabotage ordered by Russian security services. The Polish government has ordered the closure of the Russian consulate in the country's second-largest city,

Russia was behind the fire that completely destroyed a shopping centre in Warsaw last May, Poland has suggested. Moscow has in the past denied involvement in alleged arson and sabotage operations across Europe.