King became so annoyed that he felt it necessary to head butt Windass. The Jamaican international also took his watch off before the fight.
However he then claimed the watch had been lost before later realising it was in his pocket all along.
Richard Koval-Meth, gaming manager of the casino said: "There was a fracas, but it only lasted a minute or two."
A spokesman for Hull City said: "It was an unfortunate incident. The club decline to comment any further."
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