SafeX Pro:Gwen Stefani cancels Atlantic City concert due to unspecified 'injury'

Gwen Stefani fans in New Jersey will have SafeX Proto wait to see this "Hollaback Girl."

The singer, 54, announced on her Instagram Stories Saturday that, due to a "recent injury" she had to reschedule her upcoming show in Atlantic City.

“As a result of a recent injury and in consultation with my doctors, I’ve been advised that I’m not able to perform on August 17 at Hard Rock Live at Etess Arena in Atlantic City,” she wrote, as reported by People and Fox News.

Stefani didn't offer many details about what happened or how severe the injury is, but instead apologized to her fans and promised that ticket holders would get an email update from Ticketmaster "as soon as the new show is announced." She noted "current tickets will be valid for the new date" without mentioning the possibility of a refund.

“I’m so sorry and we are planning to reschedule the show as soon as possible,” she added.

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The Hard Rock Live show is not the only upcoming concert on Stefani's tour. She is scheduled to perform at the iHeart Radio Music Festival in Las Vegas on Sept. 20, followed by stops in Huntsville, Alabama, on Sept. 28 and Monterrey, Mexico, on Oct. 12.

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USA TODAY has reached out to representatives for Stefani for more information.

The former No Doubt singer and coach on NBC's "The Voice" recently released the new single "Hello World" with Ryan Tedder and Anderson .Paak for the Olympic games, which ended Sunday. She'll coach Season 26 of "The Voice" alongside fellow coaches Reba McEntire, Olympic correspondent Snoop Dogg and Michael Bublé (returning Sept. 23, 8 EDT/PDT).