Chicago Police confirmed a shooting incident took place during the Chicago White Sox’s game against the Oakland A’s at Guaranteed Rate Field on Friday.

The incident reportedly occurred in the stands during the third inning according to an eyewitness interviewed on local Chicago news station Fox 32. The incident did not disrupt the game. However, the White Sox announced after the game that the scheduled postgame concert featuring Vanilla Ice, Tone Loc and Rob Base was canceled due to “a technical issue.”

In the section where the shooting took place, fans were removed and told to go to a different gate, according to the eyewitness.

Fans “stood at that gate for at least four or five innings” and were asked if they had seen or heard anything, the witness said. The game continued while the fans were standing at the gate.

The eyewitness confirmed that he had to go through a metal detector to enter the stadium.

In 2013, some ballparks began requiring metal detector screenings upon entry. By Opening Day 2015, metal detector screenings became standard procedure throughout all of MLB.