The final minute of regulation of Kansas' 108-96 overtime victory over Iowa State on Monday is under review by the Big 12 Conference, the conference's coordinator of officials told ESPN.com Monday night.

At issue was a block or charge call that wasn't made when Elijah Johnson drove inside as Kansas trailed 90-88 with five seconds remaining. Iowa State's Georges Niang appeared to have his feet set, but no call was made as Johnson made contact with Niang.

Instead, Niang was called for a hold when Johnson's shot missed and the ball came loose on the floor. Johnson went to the free throw line and made the two free throws to force overtime.

Monday's officials were Tom O'Neill, Mark Whitehead and Bert Smith.

Curtis Shaw, a former longtime official and now the league's coordinator, watched Kansas' win. Shaw wouldn't say whether the officials made the right call at the end of regulation.

"We will handle the situation and approach the teams appropriately," said Shaw. "We review every play and take the appropriate action."

Under normal reviews, Shaw will look at the position of the officials, where they are when they make calls. He said there are plenty of tough calls to make during a game and officials aren't perfect. Calls are missed, no calls occur and this happens at different times of the game, even when a team doesn't have time to recover.

When asked what kind of accountability could occur for officials, Shaw said that because officials are independent contractors, the way the conference handles any kind of disciplinary action if warranted is through future assignments.

Even golfer Zach Johnson, an Iowa native, took notice of the call. Johnson wrote on Twitter: "What a horrible no call in the ISU/KU game. Refs blew this game in regulation. What is up with the officials this year? Terrible!"