A 17-year-old girl became the fourth person to die from being crushed in a stampede at a Halloween rave in Madrid when she succumbed to her injuries on Saturday, the hospital treating her said.
The girl had been in critical condition after the disaster early Thursday morning and died Saturday morning, an official at the Hospital Universitario 12 Octubre told AFP.
Police said three other young women died Thursday and a fifth remained in serious condition in another hospital after being caught in the stampede at a Halloween dance party.
Police and witnesses said the stampede inside the Madrid Arena municipal concert hall, which had a capacity for 10,500 people, appeared to be sparked when someone threw a flare.
Several Spanish newspapers on Saturday reported claims that the arena had been overcrowded and that there were not enough security staff.
A spokesman for the Diviertt company that organised the event, Jorge Morales, told Cadena Ser radio that 9,650 people attended the concert and there was "rigorous control" of people entering.
The mayor of Madrid, Ana Botella, said municipal buildings would no longer be used for major events such as Thursday's party.