At one point it was hoped Depeche Mode could make up last night’s show tonight, but concert organizer Didi Music put the kibosh on that notion with a statement saying, “The artist’s health condition does not allow it.”

Organizers of tomorrow night’s show in Istanbul, Turkey, said that date is postponed as well.

Other than that, details are still on the slim side. Band reps have not announced what is ailing Gahan, but an AFP report blamed his illness on “suspected gastroenteritis.”

The next scheduled date for the band is Saturday in Bucharest, Romania. However, Turkey’s Anatolia news agency reported Gahan may have to go to the United States for treatment and that Bucharest, along with Sunday’s scheduled show in Sofia, Bulgaria, might also be postponed or canceled.