(CNN) The world of Westeros is back in the spotlight as filming for the "Game of Thrones" prequel is underway -- and in a location fans know very well.

Film production for the untitled show has begun in Northern Ireland, according to the Belfast Telegraph . The local media outlet reports that shooting sites across the province of Belfast were being set up last week.

CNN reached out to HBO, which did not comment on the matter. (CNN and HBO are owned by the same parent company, WarnerMedia.)

The HBO drama has filmed in parts of Northern Ireland for scenes before, including the Red Wedding and the Battle of the Bastards