A boy is in a critical condition after being found unresponsive in a lake over the Bank Holiday weekend.
Police officers, the ambulance and fire service attended the scene at Swanwick Lake, Hampshire, and got the two-year-old boy out of the water yesterday evening.
The child was taken to Southampton General Hospital where he remains in a critical but stable condition.
Police say they are investigating the circumstances surrounding how the boy came to be in the water.
Officers are appealing for information and would like to hear from anyone who was in this area between 7.45pm and 8.30pm.
An 18-year-old man from Southampton, who is known to the boy, has been arrested in connection with this incident and is assisting police with enquiries.
Detective Inspector Toby Elcock said: “We know this incident will come as a shock to the local community, but we ask people to please not speculate as we follow up all lines of enquiry to establish how the boy came to be in the water.
“We are keeping an open mind as to what has happened, and we are keen to speak to anyone in the area to help us build up a picture of the circumstances.
“If you were in the area at this time, please call us. Any information, no matter how small, could prove significant, so please do get in touch.