Twenty One Pilots seem to be up to something as letters begin appearing in the mail and billboards pop up around the world.

Three years on from the release of ‘Scaled And Icy’, Twenty One Pilots have begun teasing the next chapter of their band with a cryptic nod to their past.

Over the last few days, fans have reported receiving letters from the Sacred Municipality of Dema, and billboards have appeared around the world mentioning Clancy (both throwbacks to the band’s 2018 album ‘Trench’).

Eagle-eyed fans have also noticed that their album artwork has been updated on streaming sites – with strips of red tape now plastered across the covers of each album – as well as a new logo appearing online.

With an announcement potentially imminent, check out some of the mysterious hints seen so far: