Three children and a man who were found dead at a house in Surrey have been pictured.
The bodies of Piotr Swiderski and his young sons were discovered by police in a property in Bremer Road, Staines-upon-Thames, at about 1.15pm on Saturday.
Officers have confirmed the children, who were all under the age of four, were related to the man.
Neighbours have said they believed the family was Polish.
A tribute of flowers has been left outside the house with the message: "Rest in peace little ones. We will always think of you."
The children's mother and their next of kin are aware and being supported by specialist officers.
Police are investigating the deaths, but officers believe it was an isolated incident with no third-party involvement.
Post-mortems and formal identification will take place in due course.
Surrey Police have also completed a mandatory referral to the police watchdog the Independent Office for Police Conduct (IOPC) due to previous police contact with those involved.
An IOPC spokesperson said: "We have been notified by Surrey Police about the tragic incident in Spelthorne.
"We will be assessing a referral from the force to decide whether any action is required by the IOPC."
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Tap hereDetective Chief Inspector Gareth Hicks, who is leading the investigation, said: "This is a truly tragic incident and a thorough investigation is under way to establish exactly what happened.
"We would like to thank the local community for their support and understanding whilst we have been conducting our inquiries."
Bremer Road was closed after the incident but has now re-opened and there will continue to be a police presence in the area "for the foreseeable".
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