Two men arrested by police investigating the house fire death of seven-year-old Joel Urhie have been released.
The pair, aged 21 and 29, were held on Saturday morning at homes in south London.
They were arrested on suspicion of murder, attempted murder and arson with intent to endanger life and taken to a south London police station.
The Metropolitan Police confirmed on Sunday they have since been released under investigation pending further enquiries.
Joel died in the blaze in Adolphus Street, Deptford, on Tuesday.
His mother, Sophie, and 19-year-old sister managed to escape by jumping out of a first floor window.
They suffered non-life threatening injuries.
Police said on Wednesday that Joel’s sister had been released from hospital, where her mother is still being treated.
Six fire engines and around 35 firefighters tackled the blaze in Adolphus Street after they were called at 3.25am on Tuesday.
Nearby properties were evacuated as a precaution and crews brought the fire under control just before 4.50am.
A post-mortem found the cause of Joel’s death was “consistent with fire and smoke inhalation”, police said.
Mourners including Joel’s uncle left floral tributes, cards, soft toys and balloons at the scene, while the doors and windows of the house were secured with metal shutters.
Police continue to ask anyone with information to contact the incident room on 0208 345 3715 or call Crimestoppers anonymously on 0800 555 111.