ROCK band Kasabian cancelled their headline gig at Custom House Square in Belfast just hours before they were due on stage.
In a message on Twitter, the band said they were unable to perform "due to illness".
They tweeted: "It is with great regret, due to illness, we cannot perform at Custom House Belfast tonight. Kasabian."
Custom House Square organisers said that they were working on scheduling a new date for Belfast.
They said tickets would remain valid for the new date, and apologised for any inconvenience caused to fans.