Coventry claim the primary crowd disturbance which marred Saturday's Championship clash at home to Derby was not linked to protests aimed at owners SISU.
A full investigation by the club has found the scenes of violence in the corner of the Tesco Stand were sparked off by a problem between a Sky Blues supporter and police officers, unrelated to events in the Coventry Telegraph Stand. The latter trouble came about when stewards removed a banner which read "SISU out" which was deemed unsafe.
Chief executive Paul Clouting told the club's official website: "We had a meeting with our Supporters Consultative Group on Friday. We explained our policy that all banners had to be fire retardant."
He added: "For instance, all of the Derby banners on show on Saturday had been cleared in advance for admission into the game. That is a rule frequently applied in the Football League.
"Obviously there are limits when it comes to the use of appropriate language on any banner and that was not the issue here - it is a matter of safety rather than content matter.
"The banner in the north stand behind the goal was clearly homemade and had not been allowed in under the regulations - that was the motivation for taking possession."
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