Newcastle Hospitals NHS Trust apologises for care it says "fell short of the standards" expected.
Three boys aged 16 and two aged 17 were taken to hospital with serious injuries on Saturday night.
Concerns from staff, parents, carers or the child themselves will trigger an immediate escalation of care.
King Charles III will deliver a speech to the Commonwealth Heads of Government Meeting on Tuesday as he concludes his nine-day Caribbean tour.
The broadband firm has not finalised numbers but it is likely be a sizeable chunk of staff, the BBC understands.
His family describe the night police told them of his death, and watching him being handcuffed.