Mumford & Sons announced on their Facebook page today that bassist Ted Dwayne is in the hospital with a blood clot on his brain.

The English bluegrass/folk group said they will be forced to postpone at least three upcoming shows while Dwayne recuperates; as of now, there’s no word on how his illness will affect their scheduled performance at Bonnaroo.

The band’s statement read:

“To our fans –

Our friend and bandmate Ted has been feeling unwell for a few days, and yesterday he was taken to a hospital to receive emergency treatment. The scans revealed a blood clot on the surface of his brain that requires an operation. Ted is receiving excellent care and we are being assured that he will recover quickly from surgery.

Sadly we have to postpone three upcoming headline shows planned for this week in Dallas on Tuesday 6/11, Woodlands on Wednesday 6/12, and New Orleans on Thursday 6/13. All dates will be rescheduled and will be announced as soon as we can; all tickets for this week’s events will be honoured at their rescheduled dates. We have no plans to cancel or postpone any other appearances along this current tour.

We’re all wishing Ted a speedy recovery.”