Six men in India have been arrested for killing a woman and her four children, including a 10-month-old baby, over suspicion that she was a witch who killed a girl.

Key points: Police said the villagers blamed the woman for the illness and death of a 12-year-old girl

Police said the villagers blamed the woman for the illness and death of a 12-year-old girl The men told police that she admitted to casting a spell on the girl

The men told police that she admitted to casting a spell on the girl 134 murder cases were linked to witch-hunting in India in 2016 alone

Angry villagers broke into the woman's home in eastern Odisha state and hacked her and her children to death with farm tools before dumping their bodies in a well, investigating officer Sushant Dash said.

Mr Dash said the six, including a local witchdoctor, were charged with murder and other offences under Odisha's Prevention of Witch-Hunting Act.

"They have confessed that they committed the murders for witchcraft," Mr Dash told the Thomson Reuters Foundation, adding that a complaint by the woman's husband, who was away on the day of the killings, prompted them to hunt for the suspects.

"Two or three more people might be arrested in the coming days."

Men and women are often branded as witches and assaulted or killed in parts of India, particularly among poor and tribal communities.

According to the National Crime Records Bureau, there were 134 cases of murders linked to witch-hunts in 2016, with Odisha recording the second most incidents after neighbouring Jharkhand state.

Odisha state is part of India's "red corridor", where a Maoist insurgency and marginalisation have contributed to some of the worst literacy, child malnutrition and maternal mortality rates in the country.

Mr Dash said the villagers blamed the woman for the illness and death of a 12-year-old girl after the witchdoctor — a traditional healer who treats ailments believed to be caused by witchcraft — told them she had cast a spell on the child.

Campaign groups say superstition and occult beliefs are prevalent among people living on the margins of society with limited access to healthcare, education and development.

Villagers often consult local quacks who blame witchcraft for illness and prescribe 'cures' like burning sick children with hot clay or iron, experts say.

"It is a form of violence against women and strict law alone cannot stop such crimes, we need to educate them," said Anuradha Mohanty, head of the People's Cultural Centre, a local child and women's rights group.

A 50-year-old man killed another woman in Odisha earlier this month, accusing her of using sorcery to make his son sick.

Reuters