The Swedish Maritime Authority issued a warning on Tuesday about two breaches on the Russian-owned Nord Stream 1 pipeline in Swedish and Danish waters, soon after a leak on the neighboring Nord Stream 2 project was discovered.

“Nord Stream 1 has two leaks, one in the Swedish and one in the Danish economic zones. They are fairly close to one other, “Reuters spoke with a spokeswoman for the Swedish Maritime Administration (SMA).

The leaks were located northeast of the Danish island Bornholm, the spokesperson said. It was not immediately clear what had caused the leaks.

“We are keeping extra watch to make sure no ship comes too close to the site,” a second SMA spokesperson said.

On Monday, Danish authorities asked ships to steer clear of a five nautical mile radius southeast off Bornholm after a gas leak from the defunct Nord Stream 2 pipeline drained into the Baltic Sea.

Later the same day, the operator of the Nord Stream 1 pipeline, which ran at reduced capacity from mid-June before shutting down completely in August, also disclosed a pressure drop on both lines of the Nord Stream 1 gas pipeline.

The Baltic Pipe, a new subsea pipeline delivering Norwegian gas to Poland with an annual capacity of 10 billion cubic metres per day, is due to be inaugurated later on Tuesday.