Authorities say the power supply is being restored to thousands of households in Berlin that had been without electricity in freezing temperatures for four days following a suspected far-left attack on high-voltage lines.

Power is being restored to the last homes hit by a five-day blackout in Germany's snow-covered capital, Berlin. The outage was caused by a suspected arson attack and came as temperatures dipped below freezing. It is reportedly the longest blackout in the capital's post-war history. A far-left militant group has claimed it was behind the outage.