Dutch navy submarine MS Dolfijn has broken off a mission in the North Sea near the coast of Scotland because several members of its crew have been diagnosed with coronavirus.

In total, 15 members of the 58-strong crew reported sick with slight flu symptoms, including coughing and a slightly raised temperature. Tests showed eight members of the crew had or had recovered from coronavirus, the defence ministry said.

The submarine is now returned to its base in Den Helder two weeks ahead of schedule. The crew will be quarantined on their arrival.