Police said they are treating the death of a 3-year-old girl in a hotel swimming pool in Lancashire as "unexplained".
A 40-year old woman remains in police custody after being arrested on suspicion of murder and child neglect.
Detective Chief Inspector Dean Holden of Lancashire Police said: “We are treating this tragic incident as an unexplained death and are continuing to investigate just how the child has come into difficulties in the pool."
Police said the girl was removed from the swimming pool at the Dalmeny hotel in St Annes by a member of the public who jumped into the water to help, accompanied by a member of staff from the hotel, but she died in hospital last night.
A Home Office post-mortem will take place to establish the cause of death.
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