The Baltic states of Estonia, Latvia and Lithuania completed a switch from Russia's electricity grid to the EU's system on Sunday, severing Soviet-era ties amid heightened security after the suspected sabotage of several subsea cables and pipelines.

The three Baltic states successfully connected to the European power grid Sunday after severing Soviet-era links with Russia's network, a shift that EU chief Ursula von der Leyen hailed as "freedom from threats and blackmail".

Lithuania said on Saturday it had disconnected its electricity system from Russia's power grid, part of a plan which the three Baltic states say will integrate them more closely with the European Union and boost security.