Elton John is seriously ill in hospital, femalefirst.co.uk reports. The legendary British singer has been forced to cancel a string of concerts after he was diagnosed with an E. coli bacterial infection and influenza.

Elton, 62, has been ill for two weeks, but his condition worsened and he was taken into an elite London hospital on Friday for tests. His partner, David Furnish, is understood to have spent Sunday at his bedside.

As he left the hospital he said of John’s condition: “He’s OK, he's fine.” On doctor’s advice the singer has, however, postponed U.S. dates in Seattle and Portland, which he was due to perform with Billy Joel over the next two weeks.