Gelsenkirchen - FC Schalke 04 released the following statement on their official website on Monday.

"Schalke sporting director Horst Heldt announced there would be consequences after Sunday’s defeat away to 1. FC Köln and the first action has been taken: Kevin-Prince Boateng and Sidney Sam have been suspended indefinitely with immediate effect. Marco Höger is suspended from training and first-team action up to and including Saturday, 16th May."