Chief Inspector Paul Southern of Wolverhampton Police condemned the attack in a statement yesterday.
He said: “This was a totally reckless attack and it was by luck rather than by design that no one was seriously injured or killed. We believe there were more than 100 people at this event and it’s vital that we speak to anyone who was there and who saw or recorded what happened so that we can bring those involved to justice.
“The community will be understandably shocked and worried by what happened. We’ll be carrying out extra patrols to offer reassurance today.”
Anyone with information has been asked to get in touch via 101 or Live Chat on the police website, quoting log 4353 of July 1. Alternatively, contact Crimestoppers anonymously on 0800 555 111.