His body was found at a multi-storey car park in Hanover Street.
Police believe he had fallen from the roof. He was pronounced dead at the scene and a post mortem is expected later. His death is not believed to be suspicious.
The dead woman's 37-year-old son who was seriously injured in the incident at Bradley Road remains in hospital. His injuries are serious but not life-threatening.
Police were called at 6.39pm on Friday to reports that a man and a woman had been attacked.
They found the man and woman suffering from stab wounds. Both were taken to a hospital in a serious condition and the woman later died of her injuries. Police say it was a targeted attack relating to a domestic related incident.
The scene in Bradley Road was taped off as police continued their enquiries.