15 Celtic fans arrested and eight police officers injured during violent clashes before Champions' League match
CELTIC'S Champions League trip to Ajax has been marred by a clash between supporters and police in the centre of Amsterdam before kick-off, with 15 fans arrested.
Amsterdam police said fans armed with bottles and sticks attacked plain-clothed officers in an incident described as "coming out of nowhere".
Eight officers were injured with one knocked unconscious following the fighting in Dam Square, in the city centre.
Police said the majority of those arrested were Celtic fans, although it is believed that supporters from other clubs were also involved.
"At the end of the afternoon a large group of Celtic supporters attacked police officers in plain clothes," a police spokesman said.
"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."
Celtic lost the match 1-0 and face an uphill battle to reach the knockout stages of the competition.