Rick Diamond/Getty Images
Denise Warner
August 19, 2012 AT 12:00 PM EDT

UPDATE (Aug. 20): Willie Nelson rep says singer feeling better, to go back on road

ORIGINAL POST: Willie Nelson had to cancel a fundraiser near Denver, Colo., according to reports from 9News.com and the Denver Post.

The 79-year-old singer was reportedly “suffering from breathing problems due to the high altitude and emphysema,” according to an announcement made at the event in Castle Pines Village. He was taken to a hospital.

Story developing.

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