BIRMINGHAM, Ala. – Elton John has cancelled a concert set for Friday night in Birmingham.

The British singer and piano player was supposed to perform at the Birmingham Jefferson Convention Complex Arena. Ticketmaster announced the cancellation on its website hours before.

Officials at the arena say medical reasons are being cited for the cancellation, but they don’t have details. A news release from the singer’s representatives also cited medical reasons.

A photo on the arena’s Facebook page shows the singer’s piano already was in place and ready for the show.

Ticketmaster says it is offering refunds for ticket purchasers.