Tom Jones is receiving treatment in hospital for a bacterial infection, and has postponed his Thursday night show at Chester Racecourse in the UK.
A statement on the 78-year-old's Twitter account read: "It is with regret that we have to postpone Tom Jones' performance at Chester Racecourse this evening. This show will be rescheduled for Sunday 12th August.
"Sir Tom Jones has a bacterial infection for which he is being treated in hospital.
"The condition is being well managed and we are hoping for a speedy recovery. He is extremely sorry and disappointed not to be able to perform tonight, and sincerely apologises for inconveniences caused to the audience and all those who are involved in the event."
A note from Sir Tom... pic.twitter.com/EjuWYOyU2Q
— Tom Jones (@RealSirTomJones) July 19, 2018
On Wednesday, Jones was forced to cancel a concert at Stansted Park in Hampshire. He announced he was cancelling the concert hours before he was due to take to the stage.
Fans were also alerted to that cancellation with a tweet posted to Jones' official account.
The statement read: "It is with regret that we have to cancel Tom Jones' performance at Stansted Park this evening.
"Unfortunately, Sir Tom is unwell and has been advised by doctors not to perform. All ticket holders will receive a full refund by contacting their point of purchase.
"We apologise for any inconvenience this causes and we wish Tom well."
Important show information about tonight’s performance from @CuffeandTaylor pic.twitter.com/DwNBFpzSXy
— Tom Jones (@RealSirTomJones) July 18, 2018
Jones has upcoming dates in Germany, Finland and the UK scheduled.
It's not the first time he has cancelled gigs due to ill health.
In September 2017 he cancelled his US tour just five days before it kicked off after undergoing a hip replacement operation.