The Swedish military has called off its week-long search for a suspected submarine in the sea south of Stockholm, officials say, reports GHN based on BBC.
Naval vessels and planes have been searching the Stockholm archipelago for the last week, amid suspicions a Russian submarine was in trouble there.
Russia's defence ministry denied any of its ships were involved.
It was reported to be Sweden's biggest military mobilisation since the Cold War.
In a statement, the military said: "This means the bulk of ships and amphibious forces have returned to port." It added that some smaller units would remain in the area.
The statement did not say why the search has been cancelled. A press conference on the search will be held at 10:00 local time (08:00 GMT).
The military had been investigating possible "foreign underwater activities" based on what it called "several credible operations".
Swedish officials had not named any country, however, there were widespread suspicions that the Russian navy was involved.
Soviet submarine sightings caused Cold War security alerts in Sweden in the 1980s.
Russia's military intervention in Ukraine this year has fuelled suspicion about its intentions towards other neighbouring states, notably in the Baltic.
On Tuesday, Nato said its jets intercepted a Russian spy plane that had briefly entered Estonian airspace.
Russia said the plane had been on a training flight and had not violated Estonian airspace.