Pete Doherty's reunited band pulled the plug on a gig in London on Thursday night (10Sep15) at the last minute and now a show in Manchester, England scheduled for Friday (11Sep15) has also been axed.
It's still not clear what "medical situation" led to the cancellations, but a statement has now been posted on the group's Facebook.com page.
It reads: "Due to unforeseen circumstances tonight The Libertines have had to postpone their sold out shows at the Electric Ballroom in Camden and at the Ritz in Manchester tomorrow night.
"Peter, Carl, John and Gary apologise whole heartedly to their fans and will reschedule both shows as soon as possible. This will not effect any of The Libertines other commitments."