Dave Grohl says his band Foo Fighters  is officially taking a break.
Grohl posted an open letter to the group's Facebook account Tuesday, calling the band "my life," but noting "it's a good thing for all of us to go away for a while."
Grohl told fans Saturday  at the Global Citizen Festival he didn't know when the band would play together again, and affirmed that in the letter.
"Without making a big deal out of it, we don't have any shows after this. This is it, man," Grohl said at the concert in NYC's Central Park. "Honestly, I don't know when we're gonna do it again... and this is the perfect place to do it."
He went more in-depth in the letter, writing, "Never in my wildest dreams did I think Foo Fighters would make it this far… There were times when I wanted to give up. But I can't give up this band. And I never will. Because it's not just a band to me. It's my life. It's my family. It's my world."
Grohl says he's "not sure" when the Foo Fighters will play again, and is now focused on his forthcoming Sound City documentary and album. "A year in the making, it could be the biggest, most important project I've ever worked on," he said of the project. "Get ready… It's coming."
He created Foo Fighters in 1994 after his time as the drummer in Nirvana, recording the band's self-titled debut before inviting other members to join. The band has been one of rock 'n' roll's most enduring critical and commercial successes, winning 11 Grammys, including five earlier this year.
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