A 28-year-old depressed Sikh woman who was found dead along with her three infants in Calgary in October last year may have killed the babies herself, Canadian police have said.
Harsimrat Kahlon (alias Simmi Kahlon) was found dead in the home in October 2009. Family members subsequently found the bodies of three infants hidden in sealed plastic bags and suitcases around the basement unit she shared with her partner.
The mystery surrounding the four deaths were revealed on Thursday when police said the mother died of complications related to childbirth.
It was still unclear how the newborns died.
However, police said the case "has many of the characteristics of infanticide" due to the physical and psychological evidence they gathered.
Kahlon's diary entries reflect a long history of mental-health.
She suffered from borderline personality disorder, said forensic psychologist Dr Thomas Dalby, who was part of the investigation.
"It was clear that she was significantly depressed at times, looked at herself as worthless, and had lost her will for life," said Dalby.
Kahlon gave birth to the first child in hospital in 2005, while delivering the other children alone in her house, according to police.
She went to great lengths to conceal her pregnancies from her partner and others.
Investigators are satisfied no one other than Kahlon was involved in the deaths and no charges against anyone else are being laid.