Detectives investigating the East Croydon sorting office rave where a 15-year-old boy died have released images of seven people they want to speak to as part of their enquiry.
Rio Andrew was taken to hospital in the early hours of Sunday morning after falling ill at the event in the disused Royal Mail building in Cherry Orchard Road, Croydon.
He had gone with a group of his friends when he collapsed and became ill at the rave.
The teenager, from west London, died in hospital on Monday.
A 19-year-old remains in hospital after falling ill at the rave.
Officers are appealing for the seven men featured in the CCTV images to come forward or for information about their identity.
They believe they may hold key information about the disorder that happened during and after the rave.
It is not believed that any of these men were in any way involved in the death of Rio Andrew.
Anyone with any information about the seven men pictured is asked to contact the Metropolitan Police’s public order investigations team on 020 8246 0076 or Crimestoppers anonymously on 0800 555111.
Fourteen people have been arrested in connection with the event, nine of whom were arrested during the event.
Two men have been charged with violent disorder and drugs offences.
A 47-year-old man and a 30-year-old man were given adult cautions for possession of class A drugs.
Three men were arrested on suspicion of money laundering, a 17-year-old boy was arrested on suspicion of violent disorder and a 22-year-old man was arrested on suspicion of criminal damage.
These five have been bailed pending further enquiries.
Police have also arrested five people for handling stolen goods and criminal damage offences, in connection with the investigation.
These five men are in custody and are being questioned by police.