Francesco Facchinetti, who is a DJ from Italy, said MMA fighter Conor McGregor broke his nose with a punch to the face.
TMZ Sports reported that Facchinetti said the punch happened at approximately 2:30 a.m. Sunday and was unprovoked in front of 10 witnesses.
"I took a punch for nothing," the DJ said. "That punch could go to anyone. My friends, my wife, or other friends. That's why I decided to sue Conor McGregor because he is a violent and dangerous person."
Simon Samano of MMA Junkie noted Facchinetti said he and his wife, Wilma Helena Faissol, were spending time with McGregor and the fighter's fiancee, Dee Devlin, when the punch occurred.