Two people remain missing and one person is fighting for their life after a boat capsized in a lake yesterday.
A major search operation is underway after a group of adults were overturned into Roadford Lake in Devon.
Police said efforts are continuing to locate two missing people, while one person has been discharged from Derriford Hospital and another remains in a critical condition.
Two other people were rescued and treated at the scene by paramedics on Wednesday.
The group from Devon was thrown into the reservoir after their boat capsized at roughly midday.
Coastguard, fire, ambulance and air ambulance crews were at the scene, with support from the Coastguard helicopter.
Devon and Cornwall Police said in a statement: "Police remain at Roadford Lake in Lewdown, Okehampton, following an incident yesterday [Wednesday 8 June] where a boat capsized in the water.
"Police-led searches have recommenced today, Thursday 9 June, and efforts continue to locate two missing people.
"Two people were yesterday removed from the water and taken to Derriford Hospital for treatment. One person has since been discharged and one person remains in hospital in a critical condition."
The force added: "We are supporting the families of all those involved.
"The lake will remain closed for public access for the foreseeable future and localised road closures remain in place at the activity centre to allow access for the relevant emergency services."
The 730 acre (1.9 square mile) lake has been a reservoir since 1989 and supplies water to Plymouth and other parts of south Devon, according to Visit Dartmoor.
It is often used by people kayaking, canoeing, paddle boarding and sailing.