Two teenage boys have reportedly drowned after getting into difficulty while swimming in a lake.
A statement from the Police Service of Northern Ireland (PSNI) said two males aged 16 had died shortly after being pulled from the water at Lough Enagh, Co Londonderry on Monday evening.
One of the boys was taken to hospital and given emergency treatment before being pronounced dead, while the other was found underwater by divers at the scene.
Three other males were also rescued from the location, with an officer describing their condition as "shocked but not injured".
A mass emergency response was dispatched to Lough Enagh soon after a call was first received at 6.32pm, including a rapid response paramedic, five emergency crews, a hazardous area response team and an ambulance officer.
An air ambulance was additionally sent by Northern Ireland Ambulance Service (NIAS).
Detailing the incident, Inspector Brogan said: "One male was taken from the water and transferred to hospital, where he was later pronounced dead.
"A second male was located and recovered from the water after extensive searches by Foyle Search and Rescue and police divers. He was sadly pronounced dead at the scene."
"Our thoughts are with the families of those affected."
The inspector added that while a full inquest into the deaths would follow, initial inquiries suggested they had been the result of a "tragic drowning".
An earlier statement said two people had been taken to Altnagelvin Area Hospital, located in the Waterside area of the city.
Police in Londonderry meanwhile asked people earlier on Monday night to avoid the area while an emergency response was ongoing.
Local Legislative Assembly member for the area Ciara Ferguson requested residents to refrain from spreading rumours online as the incident continued.
"My thoughts are with those involved in a serious incident near Enagh Lough this evening. I would urge people not to share information online and wait for clarity from the emergency services," she said.
