Motley Crue had to end their set early Sunday night in Sydney after singer Vince Neil couldn't continue due to severe pain from kidney stones.
The band's manager Allen Kovac said the 52-year-old Neil was admitted to the hospital, adding, "He has been having problems for the last few days with kidney stones. He was treated at the hospital after the show. It's the middle of the night there, and we will know more later."
The band, which is touring Australia with Kiss and Thin Lizzy, is expected to play Tuesday's show in Brisbane.
Kovac added, "Vince is a warrior, who has played show through a wide ranging list of injuries. If there is a way to safely perform, he always does. In nearly 20 years of managing Motley Crue, I can't recall a show the band has cancelled."
Crue bassist Nikki Sixx took to Twitter to apologize to fans, writing, "Sorry Sydney for a short set tonight but Vince had to be rushed to the hospital for internal pain. Will update you on his progress."