The stampede left 53 people injured, with 13 of them in very serious condition, an Ancona interior ministry official said.
Carabinieri officers stand in front of the disco "Lanterna Azzurra" in Corinaldo, central Italy, Saturday, Dec. 8, 2018.
A stampede at a rap concert in an Italian nightclub killed five teens and one adult, and left dozens of people injured early Saturday, authorities said.
Hundreds had been waiting to see popular rapper Sfera Ebbasta perform when someone in the club sprayed an "irritant substance", leading to a stampede, Italy's civil protection agency said.
The boy, who was being treated at a hospital, said at least one of the emergency exits was locked when he tried to flee.
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Ancona Chief Prosecutor Monica Garulli told reporters at the scene that about 1,400 tickets were sold but the disco has the capacity to hold only about 870 people. Numerous injured suffered severe bruising while others had broken bones.
"Perhaps because of the dispersal of a stinging substance, boys flee by panic trampling".
"It can't be! You can't die like that".
"I don't want to pass judgement on who is responsible, but I would just like to ask everyone to stop and think how risky and stupid it can be to use pepper spray in a nightclub", he said, cancelling all his upcoming promotional events.
A further 120 people were injured, including around 10 seriously, local media reported, citing local rescue authorities.
"People can not die like this", said Deputy Prime Minister Matteo Salvini, who also serves as interior minister.