The band expressed its disappointment over the cancellation in a message to fans posted on its web site.

“It is with great regret that we have to announce the cancellation of My Morning Jacket’s upcoming tour to Europe due to injuries suffered by Jim in Iowa City.

“For the fans who have purchased tickets, we would like to extend our gratitude for your support and understanding. Our hope was to merely postpone the tour, but as our scheduling does not allow that to happen in the immediate future, we feel it is best to cancel this tour in hopes of rescheduling at some point.

“We would also like to say ‘thank you’ to all the fans who have reached out to Jim with their well-wishes as we all hope for his speedy and full recovery.”

The group has also canceled a December 29 appearance at The National in Richmond, Va., and rescheduled a pair of previously canceled Chicago shows at the Chicago Theatre for December 27-28.

My Morning Jacket’s upcoming tour of Australia, New Zealand and Japan has not been affected so far.