A man has been arrested on suspicion of murder following the death of a two-year-old girl in Dungannon on Friday.
The 32-year-old is currently in police custody following the incident in Park Avenue yesterday afternoon.
A PSNI spokesperson said the toddler was taken to hospital by ambulance but had died a short time later.
A post-mortem examination is to be carried out to establish the cause of death.
Detective Chief Inspector John Caldwell said: “The child was admitted to hospital yesterday afternoon (Friday, 6th August) after Northern Ireland Ambulance Service attended an address in Park Avenue in Dungannon with what was reported as a serious head injury. The child later died in hospital.
“As part of our investigation, we have arrested a 32-year-old man on suspicion of murder, and he remains in custody this morning.
“A post mortem will be conducted to establish the cause of the child’s death.
“Our thoughts are with the child’s family, which is being supported by Family Liaison Officers.
“We will update you in due course but, at this time, there are no further details.”