Three bodies have been found at a flat in east London.
The occupants had not been seen for several days
Officers made the discovery in Devons Road, Bow, on Monday evening, after concerns were raised that the occupants had not been seen for several days.
A 29-year-old woman, a 49-year-old man and a four-month-old baby girl were all pronounced dead at the scene.
The ground floor flat has been sealed off and police have been carrying out a search of the area. The deaths are being treated as suspicious.
The bodies were found when officers forced their way into the flat in Birchdown House at about 1645 GMT.
Bromley-by-Bow councillor Mohammed Abdul Munim told BBC London that the woman had recently contacted him to make an urgent request to be re-housed.
Neighbour Amanda Gunnell also reported hearing the couple rowing on several occasions.
"They were always having arguments.
"Sometimes if they were walking down the road he would be shouting and she would try to shrug it off like she was embarrassed to be having an argument in the street," she said.
A statement from Scotland Yard said: "We are in the process of tracing and informing next of kin and await formal identification so are not yet in a position to discuss identities."
A post-mortem on the man was carried out on Tuesday. The remaining post-mortems will be held on Thursday.