By james art 
A series of package arsons in Birmingham, Warsaw and Germany are believed to have been preparations for a Russian attack on flights to the US, Polish prosecutors say.
Four people have been arrested by Poland’s National Prosecutor’s Office in connection with parcels “that spontaneously combusted or detonated during ground and air transport”.
Polish prosecutor Katarzyna Kalow-Jaszewska said the group’s aim was “to test the channel for the transfer of such parcels, which should eventually be sent to the United States of America and Canada.”
In July, a suspicious fire broke out at a DHL warehouse in Minworth, Birmingham, believed to have been caused by an incendiary device hidden in a package.
Similar fires broke out at a transport company near Warsaw and a warehouse in Leipzig, all within three days.
Last month, Ken McCallum, the head of the UK’s domestic intelligence agency MI5, said Russian secret agents carried out “arson, sabotage and more dangerous acts carried out with increasing recklessness” after the UK helped Ukraine in Russia’s war.
A Kremlin spokesman told the Wall Street Journal that the claims were “traditional unfounded insinuations from the media.”