The US-led alliance said it was concerned by Moscow's "hybrid activity" in Czechia, Estonia, Germany, Latvia, Lithuania, Poland and the UK.

NATO has issued a sharp warning over “hostile” Russian activity across Europe.

In a statement released on Thursday, the 32-member military alliance said it was “deeply concerned about recent malign activities” by Moscow, which it called a threat to Western security.

It pointed to “disinformation, sabotage, acts of violence, cyber and electronic interference… and other hybrid operations.”

Czechia, Estonia, Germany, Latvia, Lithuania, Poland and the UK have all been affected, according to NATO.