The naval mine was blown up by the military outside Härnösand

The Swedish Armed Forces and the Coast Guard have been monitoring the dangerous sea sin during the night.

At 05:00 it was blown up by the military.

- We identified the mine as Swedish from World War II.

How it ended up there is difficult to know, says Urban Fröberg, press officer for the Västernorrland Group in Härnösand.

Photo: Emil Silferberg, Swedish Armed Forces

Fröberg says that they do not know if the mine was sharply charged, but that all ammunition found is considered sharp.

It is not so common to find mines this far north.

Most were laid in the southern Baltic during the war.

- About 165,000 mines were laid from all sides during the war, many have been cleared but some are still found, says Fröberg.