U2 and Live Nation issued a statement via U2.com notifying ticket holders for tonight's show in St. Louis that the show is cancelled. The statement reads:

Live Nation and U2 regrettably announce their St. Louis show scheduled for tonight, September 16, 2017 has been cancelled. 

"We have been informed by the St. Louis Police Department that they are not in a position to provide the standard protection for our audience as would be expected for an event of this size. We have also been informed that local crowd security personnel would not be at full capacity. In light of this information, we cannot in good conscience risk our fans’ safety by proceeding with tonight’s concert. As much as we regret having to cancel, we feel it is the only acceptable course of action in the current environment." - Live Nation and U2

Fans who purchased tickets online will receive a refund on the credit card tickets were ordered on.  Refunds for non-internet purchases will be available starting Monday at 10am at point of purchase.

The cancellation comes amid protests by St. Louis residents regarding the acquittal on Friday of a police officer charged in the shooting death of a black man after a car chase last year. Protests turned violent overnight, and more protests are scheduled for today.