Police found a six-year-old girl in the house where her mother lay dead, it emerged today.
One man remained in police custody today following the discovery of Theresa Gray's body on the outskirts of west Belfast.
The body of the widowed mother-of-five was discovered in the bedroom of a house in the Magnolia Park area of the city around lunchtime yesterday.
Her six-year-old daughter Kelly was in the house when the PSNI arrived and officers swiftly took her from the scene.
Neighbours reported hearing the youngster telling officers "Mummy is sleeping". She is understood to be staying with relatives.
The 48-year old, who is survived by four sons - Martin, Mark, Paul and Michael - lived in the Juniper Park area of Twinbrook with Kelly. She also leaves behind a grandson Conor.
The alarm was raised around 2.30pm yesterday when a call was made to the emergency services by a man believed to be Mrs Gray's partner who said a woman had died in the house.
When officers arrived, they discovered Mrs Gray's body in the bedroom of the house. Her brother Patrick Fox said he "couldn't believe" his sister was dead.
A man was questioned at the scene and was later arrested by officers investigating the circumstances surrounding Mrs Gray's death.
Speaking today, a PSNI spokeswoman confirmed the man arrested at the scene was held overnight and remained in police custody this morning.
She added: "He is currently helping police with their enquiries."
Sinn Fein councillor, Angela Nelson, said Mrs Gray's family has been left " traumatised" by her sudden death.
"The little girl didn't even know her mummy had died," she told the Sun.