Officers say they have launched an investigation into the incident in Mitcham, south London, after rushing to the scene at 4pm yesterday.

The girl was pronounced dead shortly after being taken to hospital.

A statement from The Metropolitan Police said: “An investigation is underway following an incident in Mitcham.

“Police were called to an address on Monarch Parade in Mitcham at 16:00hrs on Tuesday, 30 June to a report of two people injured.

“Officers and London Ambulance Service attended and a woman and a child were inside a property suffering injuries.

“The woman, aged 35, has been taken to hospital where her injuries are deemed life-threatening.

“The child, a four-year-old girl, was also taken to hospital, however was pronounced dead shortly after. Next of kin have been informed.”

A post-mortem examination will take place in due course and officers remain in the area, with a crime scene in place.

Police said that at “this early stage, they are not looking for anyone else in connection with this incident.”

No arrests have been made and inquiries are continuing.

Siobhain McDonagh, member of parliament for Mitcham and Morden said the incident was truly tragic.

She tweeted: “Truly tragic events in Mitcham over the last 2 days. My sincere condolences to family & friends. My thoughts are also with neighbours & residents who have witnessed such tragedy.”

Ms McDonagh also thanked the police and the ambulance service for their “bravery & skill”.

A London Ambulance Service spokesperson confirmed they attended the scene just before 4pm on Tuesday.

They said: “We dispatched a number of resources including an advanced paramedic, ambulance crews and an incident response officer.

“We also dispatched London’s Air Ambulance, with the first of our medics arriving within four minutes.

“We treated two patients at the scene and took them to a major trauma centre.” It comes as a three-year-old boy died after a car crashed into a charity shop in Edinburgh.

The boy and a 37-year-old woman were hit by the red Kia car which crashed into the St Columba’s Hospice charity shop on Morningside Road at 14:30 on June 30.

Police said that two pedestrians were taken to hospital, where the toddler later died.

The woman is still being treated for her injuries.