ANKARA (Reuters) - Violence in the Turkish Super Lig is "unacceptable", FIFA President Gianni Infantino said on Monday as he called on authorities to take action following a brawl after Fenerbahce's 3-2 win at Trabzonspor.

Trabzonspor fans stormed on to the pitch after the final whistle on Sunday and attacked visiting Fenerbahce players who fought back to defend themselves.