The family said: Hampshire Constabulary and Isle of Wight Constabulary initially suggested to them that Henry had been the aggressor, rather than his killer, Vickrum Digwa.
Police told the family that officers had immediately administered first aid to Henry, before admitting that he had in fact been handcuffed and arrested instead.
The police watchdog, the IOPC, told the family in April that there were "no concerns identified" in relation to officer actions on the night Henry was killed in December last year.