George Zimmerman’s auction for the gun he used to kill unarmed black teenager Trayvon Martin in 2012 has closed.

The handgun has been sold in a private auction, according to the website that hosted the sale.

George Zimmerman, who was acquitted of Trayvon’s murder, auctioned the gun, calling it an “American icon”.

Auction host, UnitedGunGroup.com, did not disclose the sale price.

The auction has drawn criticism from those claiming George Zimmerman was seeking to profit from Trayvon Martin’s death.

George Zimmerman has been arrested on charges he pointed a shotgun at his girlfriend

Gun rights advocates have applauded George Zimmerman for exercising his legal rights under current US law.

There were two separate auctions being hosted on UnitedGunGroup.com – one for prequalified bidders and one for the general public.

UnitedGunGroup.com said that the highest public bid of $138,900 by “John Smith” was not authentic.

“He was on the fake auction page, we had two auctions going at the same time,” they said in a tweet.

Another gun auction website and two other prominent gun auctioneers had previously refused to sell the weapon.

Earlier attempts to sell the gun online were hacked and fake bids were placed, causing that auction to be cancelled without a sale.

Last week’s highest bid of $65 million was posted by one “Racist McShootFace”.

Trayvon Martin’s death helped launch the national Black Lives Matter social movement.