The coroner has indicated she is likely to give a narrative verdict on the death of seven-week-old Axel Peanberg King.
Dr Shirley Radcliffe told the inquest that she had been unable to find any evidence to suggest a "clear cause" of death.
More top news
Seven people have now been arrested after a man died from serious head injuries
A Metropolitan Police officer has died after collapsing in Trafalgar Square on the way home from a shift
Police are hunting a man suspected of trying to set Finsbury Park Mosque on fire earlier this morning