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Zimmerman reportedly sells gun that killed Trayvon Martin

George Zimmerman has reportedly said he's sold the pistol he used to kill unarmed black teenager Trayvon Martin during an altercation.

Zimmerman told Las Vegas TV station KTNV on Friday that he's accepting a bid for $250,000 after an auction for the gun closed this week.

A Daytona Beach, Florida, bar owner told the News-Journal newspaper that Zimmerman had accepted his bid for $150,000 but instead backed out for the higher bid. Denny Honeycutt told the paper that Zimmerman said the buyer was a woman who was giving the gun as a birthday present to her son.

"I thought he was a man of his word," Honeycutt told the paper.

On Wednesday, the former neighborhood watch volunteer - who was acquitted in the 2012 slaying - said on his blog that the sale was successful, though he gave no details and said the buyer may choose to remain anonymous.

Details of the auction are unclear. The website believed to be the venue, United Gun Group, later said in a tweet that there were two auctions running simultaneously, one for pre-qualifed buyers and a "fake" one for the public. Bids on the fake site visible to the public went as high as $138,900 before it was deleted about midday Wednesday.

Zimmerman had set the minimum bid at $100,000. Zimmerman had told Orlando, Florida, TV station WOFL that the pistol was returned to him by the U.S. Justice Department, which took it after he was acquitted in Martin's 2012 shooting death.

Critics had called the auction an insensitive move to profit the slaying.

Zimmerman, who identifies as Hispanic and is now 32, has said he was defending himself when he killed Martin, 17, in a gated community near Orlando. Martin, who lived in Miami with his mother, was visiting his father at the time.

Zimmerman's acquittal sparked protests and a national debate about race relations. The Justice Department later decided not to prosecute Zimmerman on civil rights charges.