Two adults and two children who were found dead at a flat in west London have been named by police.
Michal Wlodarczyk, 39, Monika Wlodarczyk, 35, Maja Wlodarczyk, 11, and three-year-old Dawid Wlodarczyk were discovered by police at a property in Bedfont, Hounslow, at around 3.15pm on Friday after concerns were raised for their welfare.
Mr and Mrs Wlodarczyk are believed to be the parents of the two children, police have said.
Their next of kin have been informed and are being supported by family liaison officers.
Police say they are trying to establish the circumstances around the deaths but are not looking for anyone else in connection with the investigation.
A spokesman said special post-mortem examinations will take place in due course.
Speaking before the victims were named, a woman whose daughter was in the same class at Southville Primary school as Maja said they were a “wonderful family”.
She said her daughter, who was friends with Maja, had been trying to contact her since Tuesday but had not received a response to her messages.
The woman, who didn’t want to be named, said she thought the family may have gone to Mallorca because they were saying they were planning on going for the Mr Wlodarczyk’s 40th birthday.
“We’re praying it’s not them,” she said through tears.
“The family is really nice, normal and very hardworking,” she added, saying that the father worked as a builder and mother as a cleaner at hotel in Heathrow.
“They’re a really wonderful family,” she said.
A woman, who laid flowers at the scene in Hounslow, said the family who lived in the house were eastern European and “kept themselves to themselves”.
Michelle Cunningham, 49, who lives nearby, said: “I thought I’d come and lay down flowers after hearing what happened. It’s so sad.
“They were an eastern European family, kept themselves to themselves. I used to see the man outside his house sometimes.
“I didn’t know their names or much about what happened – I just heard about it last night.”
A neighbour, who didn’t want to be named, told Sky News earlier that he came home from work at about 11pm on Friday and saw police officers coming out of the property.
“I saw four police officers, they looked upset, like they were crying, so I knew something bad had happened,” he said.
Detective Chief Inspector Linda Bradley, who is leading the investigation, said: “I would like to assure the community that specialist detectives are working to establish the circumstances which led to this tragic incident and we will provide further updates as soon as appropriate.
“Our thoughts are with everyone who has been affected by what has happened.”
Chief Superintendent Sean Wilson, policing commander in west London, said at the scene earlier: “I believe we know who they are – four members of the same family – however, urgent enquiries are ongoing to locate and inform their next of kin and it would be inappropriate for me to name them at this time.
“Post-mortem examinations are now being arranged.”