Williams said for a normal Gauchos game there are three security guards who walk the arena and there should be one at each of the aisles on the corners of the arena. He said there are normally eight security staffers at home games.
But the arena had recently been used as a storm shelter and was not under normal operation, Williams said. The Gauchos were not even in their normal locker room.
"There was disarray," he said. "They had a lot of stuff going on, and then this happened. It was a hectic type of day. Luckily no one got hurt."
Arnold said he isn't worried about these types of incidents becoming a trend.
"It doesn't concern me,'' he said. "It's rare. I hope security would be better. The guy was wasted and in a different world. It is what it is. You can't control crazies. That's why they're crazy."
Last Friday, New Mexico State's K.C. Ross-Miller was suspended two games and Renaldo Dixon one for their involvement in a postgame brawl between the Aggies and Utah Valley a day earlier. Fans had rushed the court after Utah Valley's win and some were shown in replays to be involved in violent exchanges with players.
Also last month, Oklahoma State's Marcus Smart was suspended three games for his involvement in an altercation with a fan late in a game at Texas Tech. Their confrontation came at the bottom of the stands behind one of the baskets.
Information from ESPN's Kara Lawson, ESPN.com senior writer Andy Katz and The Associated Press was used in this report.