Legendary rock band Whitesnake have cancelled the rest of their European tour due to “continuing health challenges,” the frontman David Coverdale has announced via social media. The remaining part of the tour included Sarajevo concert planned for July 19.

“It is with the deepest sadness that I must announce that due to continuing health challenges, doctor's orders, and our concern for everyone's health and safety, WHITESNAKE is unable to continue its European Farewell Tour,” Coverdale wrote, expressing apologies to the fans who have been looking forward to the remaining concerts of the tour.

The group has already cancelled two concerts previously scheduled for June 30 and July 2.

They were supposed to take the stage in Sarajevo on July 19. Half of the tickets were sold out in a matter of hours.