Police investigating the death of a 15-month-old baby girl from Enniskillen in Co Fermanagh have been given a further 36 hours to question a 30-year-old man.
Millie Martin died yesterday in the Royal Victoria Hospital Belfast after receiving serious injuries during an alleged assault on Thursday.
The police were called to an address in Glebe Park, a residential area in Enniskillen, and discovered the infant with very serious injuries.
Investigators have refused to disclose the results of post mortem tests on the little girl's body.
A PSNI spokeswoman said they were being withheld for operational reasons.
The family of Millie Martin have spoke of their grief.
In a statement they said: 'We are deeply heartbroken by the death of our beautiful little Millie.
'The entire close-knit family are numb with pain. We simply can't believe that our loving, darling little angel is gone.'