The German Football Federation are to investigate Mainz and Nigeria’s Leon Balogun for violence.
He is alleged to have deliberately kneed Eintracht Frankfurt’s Carlos Zambrano in the stomach in the 89th minute of Sunday’s league match between the two clubs.
Felix Zwayer, match referee, did not see the infringement but it was caught by the television cameras.
Balogun has been invited to give a statement with respect to the incident.
The federation’s disciplinary committee will make a decision after considering the evidence and Balogun’s statement.