"It is with the heaviest of hearts that we announce the passing of our comrade, Eagles founder, Glenn Frey, in New York City on Monday, January 18th, 2016," The band said in a statement on their Facebook page. "Glenn fought a courageous battle for the past several weeks but, sadly, succumbed to complications from rheumatoid arthritis, acute ulcerative colitis and pneumonia. The Frey family would like to thank everyone who joined Glenn to fight this fight and hoped and prayed for his recovery."
In November, the Eagles postponed tour dates and their Kennedy Honors ceremony so that Frey could have surgery.
A statement released by the band at the time said Frey "has had a recurrence of previous intestinal issues, which will require major surgery and a lengthy recovery period."