J.J. Murphy, a veteran Irish actor best known Stateside for his portrayal of Ser Denys Mallister on Game of Thrones, collapsed and died on Friday.
He was 86 years old.
Murphy portrayed the oldest member of the Night’s Watch and commander of the Shadow Tower on the HBO epic.
He was in the middle of shooting Game of Thrones Season 5 when he passed away, with more scenes set to come in the weeks ahead.
It's unknown at this time whether producers will re-cast the role in the wake of the actor's passing, or cut Mallister out of future episodes.
In addition to Game of Thrones, Murphy also had a role in the upcoming feature film Dracula Untold, as well as parts in Angela’s Ashes and Cal.
The bulk of his work, however, took place on the stage, as he famously appeared many times at the Lyric Theatre in Belfast alongside the likes of Liam Neeson and Game of Thrones co-star Ciaran Hinds.
Murphy had been cast at the end of last month as Ser Denys Mallister and told friend he was excited to come on board the smash drama, which is filming in Northern Ireland.
We send our condolences to his friends, family and loved ones.