A baby who was cut from her mother's womb has been found alive two days after the woman's body was discovered, US police have said.
A woman who had the baby with her when found in New Hampshire was charged with being a fugitive from justice.
The girl was said to be in "fairly good health," according to Worcester police Sergeant Kerry Hazelhurst.
The body of her mother, Darlene Haynes, 23, was found in her apartment on Monday, apparently killed days before.
Police named the arrested woman as Julie Corey, 35, described as an acquaintance of Ms Haynes.
She was arrested at a shelter in Plymouth, New Hampshire, after staff became suspicious of her and notified police.
She had told staff she was the mother of the six-day-old baby, the Union Leader newspaper reported.
A male companion with her at the time was questioned by police, but was later released.
Darlene Haynes' body was found in her apartment in Massachusetts on Monday after her landlord noticed a "horrifying smell".
A post-mortem examination revealed that her foetus was missing, and that she had head injuries, but the exact cause of death has yet to be determined.
Toxicology tests were being carried out, Worcester Police Detective Captain Edward McGinn Jr said.
The last known contact anyone had with Ms Haynes was a week ago when she sent a text message to a friend saying she was having drinks with a friend in her apartment.
Ms Haynes had three other girls - aged five years, three years and 18 months.
It is not the first such case in the US.
Lisa Montgomery was given a death sentence two years ago for murdering Bobbi Jo Stinnett, whose foetus she removed. The baby girl survived.