"A fake information was planted on one of the Polish websites, aiming at Lithuanian Foreign Minister Gabrielius Landsbergis, Polish leaders and politicians, as well as US soldiers," it said in a press release.

The ministry said it "is working in coordination with the Polish colleagues in the aftermath of the attack".

It also warned that "recently there has been an increase in information and cyber-information attacks aimed at undermining the friendly relationship between Lithuania and Poland, and at igniting discord between the two nations".