A man has been arrested after the death of a woman in her 20s and a two-year-old girl was found with serious injuries at an address in Ashford, Surrey.
The man, in his 30s, has been detained on suspicion of murder and attempted murder, Surrey Police said.
Officers went to a property in Woodthorpe Road, Ashford, at 1.15pm on Thursday following a report of concern for safety.
The woman and child were found at the address with serious injuries and despite treatment from paramedics, the woman died at the scene.
The child was taken to hospital. Officers said the victim and the suspect were known to each other.
An investigation, led by the Surrey and Sussex Police Major Crime Team, is underway and enquiries remain ongoing, police said.
Senior Investigating Officer DCI Kimball Edey said specialist officers “are working around the clock to gather as much information as possible,” and that the force’s “thoughts are with the family and friends of the victims at this unbelievably difficult time”.