Two people were taken to hospital after part of the podium collapsed during the Trooping the Color rehearsal.
Five people were treated after an incident on Saturday as a crowd watched the event on Horse Guards Road in central London.
Witnesses said they heard a “loud explosion and then a scream” when someone fell from the podium.
The London Ambulance Service said two people had been taken to a major trauma center on a “priority” basis.
The other three were assisted by ambulance personnel and were discharged from the scene after the incident at around 11 am.
The army spokesman said that both parts of the checkpoint had “weakened” and that work was being done to find out the cause of the incident.
They added: “Emergency services were called to help the injured, and the rest of the crowd was safely evacuated from the stands.
“Security is our number one priority. We are working urgently with our partners and relevant organizations to understand what happened and to make sure it does not happen again.”
The audience was following the rehearsal for the full event for the Queen on June 2. Platinum anniversary celebrations.
Witnesses say the crowd was evacuated by the ambulance service, and the ceremony, which included a parade of cavalry, was interrupted.
Sam Miller wrote on Twitter that the position near him collapsed “someone fell” when people stood up for the national anthem.
Another witness said. “A loud bang was heard, then a shout, ‘Help, help.’
“There were a number of ambulances in that place, stretchers were taken out for the injured.
The Ministry of Defense has issued a statement, which reads:
“It would not be appropriate to comment further at this time.”
Two people rushed to hospital after part of the stand collapsed during the experiment | UK news
Source Two people rushed to hospital after part of the stand collapsed during the experiment | UK news