If it turns out to be a security issue, Arsenal will be held culpable. Otherwise it's down to Schalke.

The ref did nothing at the time but could still include it in his report. It'd be interesting to see if his report mentioned Hajto's involvement. It was a strange incident, with Hajto picking the object up and appearing to pocket it. Henry had to draw the refs attention to it and get him to take the object from the Schalke defender.