The Chicago Cubs are investigating a fan using what appeared to be a racist hand gesture that was caught by cameras on Tuesday night.

Cubs president of business operations Crane Kenney said in a statement that the fan made the gesture while Doug Glanville was working for NBC Sports Chicago.

"Such ignorant and repulsive behavior is not tolerated at Wrigley Field," Kenney said in the statement. "We are reviewing the incident thoroughly because no one should be subjected to this type of offensive behavior."