It follows reports from Los Angeles on August 22, where some fans said the 69-year-old appeared unsteady on his feet. The rock icon has been in frail health since undergoing heart bypass surgery and later suffering a hematoma in 2013.

Motorhead moved to reassure supporters that the problem was caused by the city's altitude. They said: "The people are great, but the air is just too thin. The high altitude makes it difficult for breathing, and that's what happened with Lemmy tonight in Salt Lake City.

"He feels very bad to have cut the show short, but being that high up, he had some trouble breathing well. Lemmy appreciates everyone's concern. The fans always rally round!" Read more - here.

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