The deaths of four people - including a mother and two kids - are being treated as a "murder suicide".
The bodies of four people - Monika, Maja and Dawid Wlodarczyk - were found at a flat in Hounslow, west London are detectives are now treating the deaths as murder.
The first two post-mortem examinations were held at Fulham Mortuary in the capital on Sunday, 18 June. Cause of death for Monika Wlodarczyk was given as multiple sharp force injuries.