A Second World War missile accidentally picked up by a dredger has been blown up by the navy.

The explosive is believed to have become caught in the net of a boat fishing near the Beatrice wind farm in the Moray Firth on January 7.

The crew of the vessel dropped it in deep water five miles off Burghead, Moray and alerted authorities.

A navy bomb disposal team retrieved the 5ft-long missile and blew it up in a controlled explosion on Wednesday.

A similar incident took place on Burghead beach in July 2015 after a man found an unexploded naval shell while walking his dog.