Pep Guardiola said he "knows what happened" but would not go in to detail after Kyle Walker and Erling Haaland were involved in a heated exchange with members of Arsenal's backroom staff following Manchester City's 1-0 defeat.
After the final whistle at Emirates Stadium, Walker and Haaland confronted Arsenal set-piece coach Nicolas Jover, who previously worked at City.
"I know what happened but I won't say anything," Guardiola said with a smile.
"They [Arsenal] know it," he added.
Gabriel Martinelli scored a dramatic late winner as Arsenal earned a statement victory over defending Premier League champions Manchester City on Sunday.