Keith Duffy has said he is "heartbroken" following the death of his father, Sean Duffy, aged 76.
The Boyzone singer, 47, announced his passing in an emotional tribute to his late father on Instagram on Monday.
Sean, from Dublin, died peacefully at Connolly Hospital in Blanchardstown on January 8 with his wife, Pat, and three sons, including Keith, by his side.
In a joint social media post, Keith and his son Jay, 25, penned a heartfelt tribute describing Sean as a "courageous and brave warrior".
They wrote: "Words cannot describe how heartbroken we are to announce the passing of our father/grandfather Sean.
"The most courageous and brave warrior we've ever known and probably will ever know. We already miss him so much."
He was supported by fellow Boyzone members with Shane Lynch posting three hearts and Ronan Keating writing: “Sending all our love."
Former Westlife singer Brain McFadden added to the tributes, writing: “What a fighter! What a man!”
Sean’s funeral service will take place on Thursday.
A death notice on RIP.ie reads: "The death has occurred of Sean Duffy (peacefully), surrounded by his loving wife and three sons, at Connolly Hospital Blanchardstown, Sean, beloved husband of Patricia (Pat) and dear father of Derek, Keith and John.
"Sadly missed by his loving wife, sons, sisters Carmel and Margaret, daughters-in-law Rose and Lisa, brothers-in-law, grandchildren Jordan, Mia, Ailbhe, Tadhg, Lily and Dylan, nieces, relatives, neighbours and friends.
"Removal on Thursday to Glasnevin Crematorium arriving for Service at 2pm. House Private Please."
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