The two-year-old was found with serious injuries in Dungannon yesterday.
Adrian Harmon reports for RedFM News:
"Emergency services attended an address in Park Avenue in Dungannon yesterday and found the two-year-old with serious head injuries.
The infant was taken to hospital where she later died.
Police say a post mortem examination will now take place to establish the cause of the child's death.
A 32-year-old man has been arrested on suspicion of murder.
He remains in custody this afternoon.
Family Liaison Officers have been assigned to support the child's family at this time."
