A man and two women have been arrested in connection with the death of a child in Co Tyrone.
Police said the death in Dungannon is being treated as suspicious.
The child died at an address in the Windmill Court area on Sunday.
The three arrested suspects are all aged in their 20s.
Woman who stabbed former partner to death while drunk jailed for eight years
Former Leinster rugby star Rocky Elsom faces a rocky post-playing future in wake of French forgery sentence
Bord Pleanála concedes in court challenge to approval of €40m Offaly meat plant
Graham Linehan’s and rights activists’ cases against Belfast pub to be identified within weeks
A PSNI spokesman said: “A postmortem will take place to determine the cause of death, however the death is currently being treated as suspicious.”
The spokesman said no further details were being made public at this stage.
DUP MLA Deborah Erskine said it was a “deeply tragic incident” which will cause “widespread shock within the local community”.
She added: “The death of a child is particularly shocking and my thoughts are with all those who are suffering today as a result.
“It is important that the full facts surrounding this case are established and the investigation that is under way can conclude as quickly as possible.
“I would ask that the community do not speculate and allow the police to conduct their investigation.” – PA