Aslan has announced they will not be playing their 40th anniversary show this weekend, as singer Christy Dignam is experiencing a "setback" with ongoing medical treatment.
In a post on social media, the band said that Mr Dignam will not be well enough to perform on doctor's advice.
The show was due to take place at the 3Arena in Dublin on Saturday.
To say we are devastated is an understatement but Christys health as you know is always our priority and we ask you to please respect Christy's privacy and allow him this time to get through this! 🎶❤️🎶 pic.twitter.com/mUPeTGjqOT
— Aslan (@OfficialAslan) September 14, 2022
The band said they were devastated at the news and apologised to fans who had travelled, booked flights and accommodation for the gig.
However, they said Mr Dignam's health is their priority and they asked fans to respect his privacy and allow him time to get through this challenge.
"Everything was going so well coming up to our 3Arena show and Christy was doing great," the band said in a social media post.
"However, he has suffered a setback with his treatment, and we have now been instructed by his doctors that it is not advisable for Christy to perform this Saturday."

"Christy, Joe, Alan, and Billy are beyond devastated to have to share this news with you. We are working to find a new date at 3Arena, so do hold on to your tickets, as they will be fully valid for the rescheduled date.
"As you all know, Christy's health is priority, and we also have to respect his privacy at these times."