Game Of Thrones star Kit Harington has been forced to miss a planned appearance at California's Comic-Con event this week after breaking his ankle.

The British actor was due to attend the popular fan convention in San Diego to promote the hit TV show, but a nasty injury has forced him to pull out.

The news was confirmed in a post on the show's official page, which states, "Kit Harington is recovering from a broken ankle and unfortunately will not be able to attend this year's (San Diego Comic-Con)."

A representative for HBO, the network behind Game of Thrones, has told The Hollywood Reporter that the injury did not happen on set and will not affect the upcoming production schedule.