Muhammad Ali's 'Rumble in the Jungle' belt sells for $6.18M US at auction

Muhammad Ali's championship belt from his 1974 "Rumble in the Jungle" heavyweight title fight was sold at auction on Sunday for $6.18 million US.

The winner of the heated competition for the belt was Indianapolis Colts owner Jim Irsay, according to Heritage Auctions in Dallas.

In a tweet Sunday, Irsay confirmed he acquired the belt for his collection of rock music, American history and pop culture memorabilia that is currently touring the country.

The belt will be displayed on Aug. 2 at Chicago's Navy Pier and on Sept. 9 in Indianapolis.

"Proud to be the steward!" Irsay tweeted.

BREAKING—-Muhammad Ali’s<br>championship belt from 1974 ‘Rumble in the Jungle’ when he employed his rope-a-dope and defeated George Foreman—-just added to <a href="https://twitter.com/IrsayCollection?ref_src=twsrc%5Etfw">@IrsayCollection</a> Just in time for the Aug. 2 show at Chicago’s Navy Pier (and Sept. 9 at Indy). Proud to be the steward!