Swedish investigators are looking into the movements of a Chinese vessel in the Baltic Sea after two internet cables were severed, in what some Western leaders suspect was an act of sabotage.

The Yi Peng 3, a Chinese-registered bulk carrier passed close to Swedish-Lithuanian and Finnish-German cables at the time both were mysteriously damaged on Sunday and Monday, according to ship tracking data.

Sweden is now “taking a hard look” at Yi Peng 3 and the role it might have played in both incidents, a source familiar with the investigation told the Financial Times.

The vessel had been travelling from Ust-Luga in Russia to Port Said in Egypt, through the Baltic Sea when the 730-mile fibre optic cable C-Lion1, the only such direct connection between central Europe to Finland and another cable were cut, causing some internet outages in Lithuania.

A Danish navy vessel appears to have pursued the Yi Peng 3 on Tuesday evening according to marine traffic data.

The same data showed HDMS Soloeleven, another Danish military ship, on Wednesday morning staying close to the Chinese carrier.