It's now being reported in Australia that authorities believe that the attacker was someone named Ben Cohen.
He could be from any ethnic community, I guess. Those clothes he wears are rather expensive sports gear - the jersey is a 'supporters' garment that costs hundreds. But he looks haggard and as if he is run down. I don't think he is dressed like an Islamic fundamentalist, because he has shorts on, and no sleeves. They would normally cover up. But who knows?