Jewell was engaged to "Housewives" cast member Kandi Burruss until August. He appeared in several episodes of the television show, which follows the lives of metro Atlanta socialites.
Police say Jewell worked at the strip club, but they are not sure what started the fight.
Richardson was in the hospital, and police didn't immediately know his age or whether he had an attorney.
Burruss, a Grammy award-winning songwriter who penned TLC's hit "No Scrubs," posted a message on her Twitter account early Saturday.
"im just in one of those moods where i dont wanna talk, i dont wanna b held & told its gonna b ok. i just wanna cry myself 2 sleep, alone," wrote the 33-year-old Burruss, who was also was a member of 1990s R&B group Xscape. "I could never n a million years imagine this happening. please pray for AJ's children."
Burruss told Essence.com in an interview last month that she was caring for Jewell's 12-year-old twin daughters.
"He would have taken them with him, but they needed a strong female role model and wanted to stay with me," she said.
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