Mexico City ? Mexico City’s mayor expressed outrage Saturday that youths as young as 13 were among the dozen people killed in a nightclub stampede and said the officials involved in the police raid that sparked the crush had been suspended.

Police went to check reports of underage drinking and drugs in the News Divine club in a working-class Mexico City neighborhood Friday evening, causing hundreds of customers to try to flee the club.

About 500 young people – more than the club’s capacity – had packed the bar to celebrate the end of the school year, according to police. Witnesses and police said desperate customers tried to break out windows to escape and the only emergency exit was obstructed by cases of beer.

City prosecutors said a 13-year-old girl died along with other customers younger than 16. The legal drinking age in Mexico City is 18. Three police officers also died in the crush at the club in Mexico City’s Nueva Atzacoalco district.