Celtic fans arrested prior to Ajax clash
15 Bhoys fans were retained by Amsterdam police after injuring eight plain-clothed officers in Dam Square before kick-off of the Champions League meeting at Amsterdam Arena.
"At the end of the afternoon a large group of Celtic supporters attacked police officers in plain clothes," said a spokesman.
"Eight were injured and one was knocked unconscious. A few of them had broken noses and needed stitches above their eyebrows and on their lips.
"Bottles and sticks were used in the attack which came out of nowhere. There were 15 arrests, mostly Celtic supporters."
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