MAHNOMEN, Minn. (AP) - A Minnesota casino says legendary country singer George Jones is ill and has canceled a concert scheduled this week.

Jones was scheduled to perform Friday at the Shooting Star Casino, Hotel and Event Center in Mahnomen. That concert had been rescheduled from April, when Jones needed more time to recover from an upper respiratory infection.

Shooting Star released a statement from Jones' management team, saying the 81-year-old singer has gotten a virus and is being treated by doctors.

Jones apologized to his fans for the inconvenience.

Shooting Star says there are no plans to reschedule the performance. Ticket-buyers will receive a refund.