KISS has been forced to postpone its September 14 concert at USANA Amphitheatre in Salt Lake City. Bassist/vocalist Gene Simmons tweeted earlier today: "Apologies to the fans in Salt Lake City. We will come back and do the show at a later date. The truth is, I have to fly to LA to do a medical procedure. Nothing serious. But it must be taken care of now. Thank you for your good wishes. All is well."

Earlier in the month, KISS postponed its shows in Oakland and Los Angeles. The date at Oakland Arena, originally set for September 16, is now listed on the venue web site as March 6. The date at Staples Center in Los Angeles, originally set for September 20, now takes place March 4.

The only reason given for moving the Oakland and Los Angeles performances was "unforeseen scheduling issues."

KISS's current lineup consists of original members Simmons and Paul Stanley, alongside later band additions, guitarist Tommy Thayer (since 2002) and drummer Eric Singer (on and off since 1991).

Formed in 1973 by Stanley, Simmons, drummer Peter Criss and lead guitarist Ace Frehley, KISS staged its first "farewell" tour in 2000, the last to feature the group's original lineup.

The End Of The Road" farewell tour launched in January and is expected to run through at least the end of 2020.

