Referring to Sweden's so far fruitless search for a suspected Russian sub lurking somewhere around the islands off its capital, he said, "This is very serious. I would even go so far as to say, to say that it's fucked up."
The Swedish military won't even say that they're hunting a submarine. They have, however, described it as a vessel that was spotted surfacing. I guess you have to connect the dots yourself.
The Swedish military has released a map of the Stockholm archipelago showing five sightings of the apparent submarine. The map also reveals how easy it is for a submarine to hide among the myriad of inlets, bays and channels.