The foreign ministries of Germany and Finland said Monday that they were "deeply concerned" by the severing of an undersea cable connecting the two countries across the Baltic Sea -- one of two Baltic Sea connections suddenly damaged in recent days.

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.

Two undersea fibre-optic communications cables in the Baltic Sea, including one linking Finland and Germany, were severed, raising suspicions of sabotage by bad actors, countries and companies involved said on Monday.