A 29-year-old woman remains under arrest on suspicion of the murder of a baby boy at a house in north Belfast.
The boy’s young sister is in intensive care after she was injured in the same stabbing incident at Brompton Park in the Ardoyne area on Tuesday evening.
It is understood the children’s father was in England when the attack happened and he has travelled back to Northern Ireland.
A post-mortem examination on the boy is due to take place on Thursday.
The house in Brompton Park, Belfast (Jonathan McCambridge/PA)
It is understood the arrested woman was taken to hospital by police after the incident for treatment to non-life-threatening injuries. She is also being held on suspicion of the attempted murder of the girl.