The detonations of packages being transported to Europe in 2024 were organized by citizens linked to Russian military intelligence, Lithuania's prosecutor general and criminal police said on Wednesday, as cited by "Reuters".
Lithuanian security officials said last year that the four packages were part of a Russian plot to blow up cargo flights to the United States.
A joint statement by the two Lithuanian services said the packages contained explosive devices that were triggered by electronic timers hidden in vibrating massage pillows.
It named Ukrainian citizen Daniil Gromov, whose Russian documents were issued in the name of Yaroslav Mikhailov, and Lithuanian-Russian citizen Tomas Dovgan Stabačinskas as the coordinators of the scheme.
The same two men organized a fire at an IKEA store in Vilnius in 2024, the statement said.
"It has been established that the above-mentioned individuals acted in an organized manner, adhering to a very strict conspiracy, dividing individual tasks", the statement said.
There was no immediate response from Russia to the statement. Last year, Russia denied orchestrating the IKEA fire and regularly dismisses Western accusations of malicious activity as evidence of Russophobia.
Governments and intelligence agencies in Europe have previously pointed to Moscow as the likely source of a series of arson and sabotage attacks aimed at destabilizing Ukraine's allies.
The Lithuanian statement said that six kilograms of explosives were found during the investigation and that 15 people, including citizens of Russia, Lithuania, Latvia, Estonia and Ukraine, had been charged.
International search warrants have been issued for three men - Gromov, Stabachinskas and Russian citizen Andrei Baburov.
The statement said that four packages were sent by mail from Vilnius on July 19, 2024.
One of them, sent by DHL, caught fire at the airport Leipzig in eastern Germany the next day, shortly before being loaded onto a DHL plane bound for the UK.
A second package exploded on July 21 in a DPD truck while passing through Poland, and a third exploded at a DHL warehouse in Birmingham, England, on July 22. The fourth package, also being transported in a DPD truck in Poland, failed to ignite due to a malfunction.
The organizers recruited people for the tasks via the messaging app Telegram and paid them in cryptocurrency, the statement said.