10:11 AM PT -- Kansas coach Bill Self says Silvio De Sousa has been suspended indefinitely while the Big 12 investigates the altercation.
De Sousa was the player who held a stool over his head during the fight.
All hell broke loose at the end of the Kansas vs. Kansas State game on Tuesday ... with the players getting in a bench-clearing brawl.
It all got started in the closing seconds of the Jayhawks' 81-60 win ... when K. State's DaJuan Gordon stripped the ball from Kansas' Silvio De Sousa to try for a last-second bucket.