At least six people died and dozens were injured in a stampede when panic broke out during a rap concert at an Italian nightclub early Saturday. Media reports said the suspected use of a pepper spray-like substance sparked chaos at the venue in the town of Corinaldo, near Ancona in central Italy.

"The cause may have been the dispersal of a stinging substance, the young people fled and trampled over each other. Sadly, six people died and dozens are injured," the fire service said in a statement on Twitter.