The longtime animal rights activist said earlier this week he had urged the Staples Center arena to close the concessions of fast-food chain McDonald's and to halt the sale of meat by other outlets at the venue for his March 1 performance there.
Morrissey's representatives said in a statement on Monday that Staples Center had agreed to the request, and they added it would the first time that all vendors within and around the Los Angeles venue would be 100 percent vegetarian.
But Staples Center arena operator Anschutz Entertainment Group, or AEG, said on Thursday that meat would still be on menus.
"As of right now, there will be meat options for fans," Staples Center spokeswoman Cara Vanderhook told Reuters.
It was unclear how the apparent confusion arose.
AEG will also roll out a special line of meatless food concessions for fans, including vegan sloppy Joes, vegan sushi, and hummus and pita bread.
The animal rights pressure group PETA recently named Staples Center as the most vegetarian-friendly venue in professional basketball. The National Basketball Association's Los Angeles Lakers and Los Angeles Clippers play their home games at the arena.
Morrissey, 53, who co-wrote The Smiths' 1985 song "Meat Is Murder," postponed a series of concerts on his North America tour last month after being hospitalized for a bleeding ulcer.
The singer is expected to relaunch the tour with a performance on U.S. late-night talk show "Jimmy Kimmel Live!" next week.
(Reporting by Eric Kelsey; Editing by Jill Serjeant and Peter Cooney)