According to a Gazprom official, 2015 saw the discovery of a NATO mine destroyer near the Nord Stream 1 offshore gas pipeline.
The spokesperson, Sergei Kupriyanov, said the device was pulled out and rendered harmless by the Swedish arm forces.
Earlier today, Swedish Prime Minister Magdalena Andersson said it would not share findings of an investigation into the explosions of the Nord Stream gas pipelines with Russian authorities or Gazprom.
A Swedish crime scene investigation of the Nord Stream 1 and 2 gas pipelines from Russia to Europe has found evidence of detonations and prosecutors suspect sabotage.
Last week Russian Prime Minister Mikhail Mishustin sent a letter to the Swedish government demanding that Russian authorities and Gazprom be allowed to be involved in the investigation.
And today, Ms Andersson said Sweden would not share the findings of the explosions that took place in the Swedish economic zone, with Russian authorities.
“In Sweden, our preliminary investigations are confidential, and that, of course, also applies in this case,” she told reporters.
However, Ms Andersson said Sweden had no power to stop Russian vessels from visiting the sites of the explosions now that the crime scene investigation was concluded.