A 19-year-old woman in Britain was stabbed to death while looking after her young niece and nephew at a house, a media report said.
Chatherine Wynter's body was discovered Tuesday in Borehamwood, Hertfordshire.
She had been looking after her sister's two young children, aged three and four, who are safe.
Police are in the process of interviewing them and do not yet know how much they saw or heard of what happened to their aunt, who regularly babysat as a favour to her sister, The Telegraph reported Wednesday.
Two men from north London have been arrested on suspicion of murder and are being questioned.
A post-mortem examination is being carried out to confirm how the woman died.
Police, who were called to the property in Beech Drive at 8 a.m., are appealing for information about the murder.
Detective Superintendent Mick Hanlon said: "Firstly, our thoughts are with the victim's family."
"As you can imagine, this is an extremely traumatic time and they are being supported by specialist family liaison officers," Telegraph quoted Hanlon as saying.