A woman found dead with three other people in a London flat was murdered, police have said.
Monika Wlodarczyk, 35, Michal Wlodarczyk, 39, Maja Wlodarczyk, 11, and three-year-old Dawid Wlodarczyk were discovered by police at a property in Bedfont, Hounslow, on Friday afternoon after concerns were raised for their welfare.
Mr and Mrs Wlodarczyk are believed to be the parents of the two children, police have said.
A post-mortem examination has revealed Ms Wlodarczyk died from sharp force injuries and her death is being treated as murder, the Metropolitan Police said.
Mr Wlodarczyk died from sharp force injuries to the neck, the force added.
Post-mortem examinations are yet to be held for the children.