A 23-year-old man has been arrested on suspicion of assaulting fellow concertgoers during a Rüfüs Du Sol show at the Rose Bowl in Los Angeles over the weekend, the Los Angeles Times reports. The suspect was identified as Julio Cesar Lopez Zavala. Police say that video footage of the assault, as well as tips from the public, helped them identify Zavala, who was taken into custody Thursday, Aug. 21. The clip showed a man repeatedly punching someone, while others tried to hold him back and call for help. We have been heart broken to hear of the act of violence that took place during the opening act on Saturday.