Irish actor J.J. Murphy, who was cast as Ser Denys Mallister in Season 5 of Game of Thrones, collapsed and died at the age of 86 on Friday, August 8, just four days after shooting his first scenes for the HBO series.

The actor was in Northern Ireland to film more scenes for the hit series, and he reportedly told friends how excited he was to be working on the show. Ser Denys Mallister is the oldest member of the Night's Watch and commander of the Shadow Tower. No cause of death was listed for the actor.

Here's what series creators D.B. Weiss and David Benioff had to say in a brief statement, where they revealed that they will not recast J.J. Murphy's role.

"We will not be recasting J.J. Murphy. He was a lovely man, and the best Denys Mallister we could have hoped for. And now his watch is ended."

The actor will next be seen in Universal Pictures' Dracula Untold. His previous feature credits include Mickybo and Me, Angela's Ashes and Cal. He was perhaps best known for his work on the stage at the Lyric Theater in Belfast, Ireland, where he starred alongside renowned actors such as Liam Neeson and Ciarán Hinds.