The Germany international was absent as Arsenal beat Newcastle at St James' Park on Saturday.
The official reason for him missing the game was for an illness.
However, according to BILD - a German publication - the 26-year-old was seen at the Peal in Berlin.
Saturday at the Pearl was an aniversary Night of the Superheroes.
Germany are in international action this week as they take on Austria on Wednesday and Georgia on Monday with Ozl expected to have overcome his illness.
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