A father has been found hanged near a reservoir after the bodies of his two teenage daughters and their mother were found in a property nearby.
Officers attended a house in Grove Road in Chadwell Heath, east London, at 1.10pm yesterday after concerns were raised about the welfare of the residents.
After forcing their way in, they found the bodies of the mother, believed to be aged 37, and two daughters, believed to be aged 13.
The 45-year-old father, who was missing from the address, was found hanging in Woodford Reservoir in Walthamstow, north east London, at 8.17am today, and pronounced dead at the scene.
Police said they attended the property on Monday evening but there was no response or sign of any disturbance.
The matter was referred to the Independent Police Complaints Commission yesterday and the Met's directorate of professional standards is reviewing the police response.
The last confirmed sighting of the family was on Sunday, Scotland Yard said.
Post-mortem examinations are expected to start later today but police said the bodies of the females had no signs of visible injuries.
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Forensic examinations are going on. Formal identification has not taken place and next of kin have not been informed.
Detective Superintendent Kenny McDonald, who is overseeing the investigation, said: "At this stage we are awaiting the outcome of the post-mortems to confirm cause of death, which will provide further evidence of what has taken place inside the house at Grove Road.
"However, at this stage in our ongoing investigation we are not looking for anyone else in connection with the deaths.
"We are making extensive inquiries to trace next of kin, who we believe to be outside of the UK."