Keane have revealed frontman Tom Chaplin is being treated for drink and drug problems.
The news comes shortly after the band cancelled shows in Edinburgh, Dublin and Ibiza, saying at the time that the singer was suffering from “exhaustion”.
However, they were still performed at the V Festival over the weekend (August 19/20).
Now a planned US tour in September has also been cancelled.
In a statement on the band’s website keanemusic.com, Chaplin revealed: “I’ve been having to deal with an increasing problem with drink and drugs, and the time has come to get the professional help I need to sort myself out.
“I feel desperately disappointed to be letting down our fans, but I want to get myself right now so that I can be back on the road for the rest of the year.”
Refunds for all the cancelled concerts should be sought at the point of purchase.
The band are due to go on a UK tour in the autumn.