Germany and Finland say they are "deeply concerned" after an undersea cable linking the countries was severed.The rupture of the 1,170km (730-mile) telecommunications cable - which is being investigated - comes at a time of heightened tension with Russia.

Authorities in Finland say a submarine data communications cable across the Baltic Sea between Finland and Germany has broken and the cause for the disruption is being investigated

One cable cut on Sunday, the other on Monday. Finland and Germany concerned about security of critical infrastructure, launch investigation.