Keith Urban Suffers a Slipped Disc
08/26/2008 AT 05:15 PM EDT
The rep wouldn't comment on what caused the injury, but says it won't affect the singer's touring schedule.
Urban, 40, mentioned the setback to fans at a concert Saturday night at the Konocti Harbor Resort & Spa in Kelseyville, Calif., but, according to CMT.com, he went on to deliver an enthusiastic performance.
The singer has been dividing his time between Australia – where he, wife Nicole Kidman and their 7-week old daughter, Sunday Rose, have been visiting family – and his North American tour dates.
Next up is a headliner slot at this weekend's Country Rocks Festival in Halifax, Nova Scotia, to be followed by a Sept. 5 appearance in New York City's Columbus Circle for the NFL's Kickoff Show.