An irritant spray was discharged during DJ Franky Rizardo's ADE party at the Gashouder in Amsterdam. Police confirmed the incident, and footage showed visitors leaving the room. Fifteen people were treated at a first-aid post; none was taken to hospital.

Reports differed on the substance, describing it as either pepper spray or tear gas, and on whether theft occurred. One report said the spraying followed an attempted necklace theft and a confrontation between the necklace's owner and the alleged thief, while another said it was possible that visitors' belongings were stolen; a third said no belongings were known to have been stolen.