A US news agency is demanding that George Zimmerman, who was acquitted of murdering an unarmed black teenager in 2012, halt the sale of a painting it says he copied from one of its photos.
George Zimmerman is seeking buyers for his portrait of a Florida prosecutor that closely resembles a photograph shot by the Associated Press.
Mr Zimmerman sold a painting on eBay in December for $100,099 (£60,706).
Last year a jury found he killed Trayvon Martin, 17, in self-defence.
The painting, advertised on Twitter by Mr Zimmerman's brother Robert, depicts Florida prosecutor Angela Corey holding her fingers together, with an apparently fictitious quote reading, "I have this much respect for the American judicial system."
Robert Zimmerman has said he and his brother were in negotiations with potential buyers.