German soccer player beat a rival because of an injury from the past

Two players were summoned for interrogation by German police after one of them ran from the stands on the field to get into a hand-to-hand battle with his rival.
The striker has been caused by the fact that his opponent broke his ankle before goals 17 months and since then he has not played football.
The incident happened during a 2:2 draw between Osnabruck and Munster Proisen.
Merkens, explained that just was celebrating goals with his teammates, but the video replays proved otherwise.
The leadership of Osnabruck Merkens chastised for his actions and apologized to Bischoff, but the club will be severely punished by the Federation.
Earlier in the season the match from best sure bets Osnabruck Germany Cup against Leipzig was terminated after one of the judges was struck by a lighter thrown from the stands.