The Commander, Festac Fire Station, Mr Chinyere Azubuike, confirmed the incident to NAN. He added that the remains of the deceased had been handed over to the police.
The Divisional Police Officer in Festac, CSP Muhammed Muazu, also confirmed the death.
Muazu added that the husband of the dead woman, who was also injured in the fire incidence, was responding to treatment in an hospital.
A neighbour, Mrs Ayinke Badru, told NAN at the scene of the incident that the fire started around 1 a.m. on the first floor of the twin duplex.
Badru said that the 20-year-old son of the late seammistress escaped from the burning house and alerted neighbours who then called the fire services and the police.
According to the neighbour, the cause of the fire remained a mystery as there was no public power supply in the area at the time of the incident, and the kitchen of the house was unaffected.
NAN correspondents who visited the scene report that the entire duplex, with wooden partitioning and flooring, was reduced to ashes.
NAN reports, however, that the second duplex was only slightly affected. (NAN)