Just weeks after cancelling a number of US tour dates due to health reasons, Janet Jackson has cancelled her entire Europe/UK tour.

Ticketmaster informed fans of the sudden change via email this morning, adding that it was "not possible" to confirm new dates at present and that those with tickets should return to their point of purchase for a full refund.

Among the gigs affected – which include concerts in France, Germany, Scotland and England – is Janet's April 2nd gig at Dublin's 3Arena.

SO upset that @JanetJackson has had to postpone Dublin & other dates. Really hope she's ok. Awfully disappointing. Still #Unbreakable

— Glenn H (@glennh1814) March 8, 2016

Janet Jackson UK and Ireland dates cancelled FFSSSS

— Keith (@Ragin_Spice) March 8, 2016

The Ticketmaster email cited "scheduling difficulties" as the main reason for the tour cancellation, but some Twitter users speculated that low ticket sales could be to blame:

Those Janet Jackson 'scheduling difficulties' were that audiences were 'scheduled' to be elsewhere on the night of the gig.

— doug fresh (@Dougwhelan) March 8, 2016

Janet Jackson's tour cancelled due to 'scheduling difficulties'. Yep, no one in Europe scheduled it in their diaries pic.twitter.com/PllZEu0b5T

— Alex Mullen (@alexmullen) March 8, 2016

Back in December, Janet postponed all dates on her US tour to give her time to recover from vocal chord surgery, but rescheduled the dates just two weeks later.