Port Vale chairman Bill Bratt has promised to ban for life any Vale fans found guilty of racially abusing Burton defender Darren Moore.
The Football Association were contacted after the former Derby centre-half was abused by a minority of Vale fans during the goalless stalemate between Burton and Vale at the Pirelli Stadium last Tuesday night and Bratt has apologised for their actions.
He said: "We are deeply shocked and saddened by these reports which bring the good name of Port Vale into disrepute.
"The club has always prided itself on the excellent work undertaken by out Valiants Against Racism iinitiative and football as a whole has spent the last 30 years trying to attract families and ethnic minority groups into our grounds.
"That work must not be undone by a small, mindless minority.
"I will be instructing our safety officer to ensure that any of our supporters who use racially abusive language to any player or supporter suffer an immediate life ban from Vale Park. This kind of bigoted behaviour is not acceptable at Port Vale Football Club."