THE only suspect in the fatal blaze that killed Caneze Riaz and her four daughters never regained consciousness so detectives could question him over possible murder charges.
Mohammed Riaz, 49, Caneze's husband, is believed to have locked the windows and doors at the Tremellen Street house before spreading an accelerant which he then ignited.
His wife and daughters are thought to have been in bed asleep upstairs when the fire broke out.
He was the only one believed to have sustained serious burns in the incident but he was rescued from the house in the early hours and resuscitated at the scene by a firefighter.
His family were already dead when the emergency crews arrived.
Mr Riaz was taken to the specialist burns unit at Wythenshawe Hospital but died two days later as a result of his injuries and smoke inhalation.
Police officers have said they are not looking for anyone else in connection with the blaze but the investigation has not yet been closed.
An official police statement revealed that officers were looking into a "relationship breakdown" between Caneze and Mohammed but neighbours and relatives have raised concerns about Mr Riaz's strict Muslim beliefs.
Caneze, who was of mixed race, was said to be very westernised and gave up a lot of her own time to work in the local community.