An employee of Swedish underwear company Björn Borg AB has just returned from Pyongyang - where he dropped off 450 pairs of "sexy" underpants.

Staying in North Korea's capital for five days in the first week of November, an employee of the company left pairs of Björn Borg's distinctive pink underpants outside the Yanggakdo International Hotel, dropped some out the window of his hotel, handed them out to his tour guides, and left some for hotel staff in his room.