A mass shooting at the WestFest carnival in West Valley City, near Salt Lake City, has resulted in the deaths of three individuals, including an eight-month-old infant. The incident occurred following an argument, and a 16-year-old suspect is currently in custody. Several others were injured during the shooting, which took place at Centennial Park as festivalgoers were enjoying the final night of the event. Law enforcement is investigating the circumstances surrounding the violence that unfolded during the festival.