Russia has a programme to sabotage wind farms and communication cables in the North Sea, according to new allegations.
The details come from a joint investigation by public broadcasters in Denmark, Norway, Sweden and Finland.
It says Russia has a fleet of vessels disguised as fishing trawlers and research vessels in the North Sea.
They carry underwater surveillance equipment and are mapping key sites for possible sabotage.
The BBC understands that UK officials are aware of Russian vessels moving around UK waters as part of the programme.
The first of a series of reports is due to be broadcast on Wednesday by DR in Denmark, NRK in Norway, SVT in Sweden and Yle in Finland.
A Danish counter-intelligence officer says the sabotage plans are being prepared in case of a full conflict with the West while the head of Norwegian intelligence told the broadcasters the programme was considered highly important for Russia and controlled directly from Moscow.
The broadcasters say they have…
This article was written by and originally published on www.bbc.co.uk