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.

An unexplained fault in an undersea telecommunications cable linking Finland and Germany has disrupted communication services, the company that runs the link said Monday. The C-Lion1 cable that connects Helsinki to Rostock in Germany was built and is operated by Cinia,

Germany and Finland launched a probe Monday after an undersea cable linking the countries was severed, warning of the threat of "hybrid warfare" amid heightened tensions with Russia.The countries' foreign ministers said in a joint statement they were "deeply concerned" by the cutting of the communications link through the Baltic Sea,