A 13-year-old girl was allegedly raped while her attacker's sister watched before she was battered by the boy and his parents - leaving her critically injured.

The girl was attacked by the 16-year-old in the Kanpur Dehat district of Uttar Pradesh on Sunday, making it the latest in a string of shocking rape cases in India.

2 The rising number of horrific rapes has lead to protests in India Credit: Getty - Contributor

Police say the rape was carried out in the presence of the boy's sister in Shivli town.

After the horrifying sexual assault the teen battered the young girl with the help of his mother and father and left her with serious injuries, according to investigators.

Cops added she was threatened and warned not to tell anyone about her ordeal before she was allowed to go home.

The schoolgirl was later taken to Lala Lajpat Rai Hospital in Kanpur where she is in a critical condition.

2 Protesters have taken to the streets to demand justice for rape victims Credit: Rex Features

The victim told her family about the attack who reported it to the police.

Officers have arrested the teenage boy and his parents.

It is the latest in a string of horrific sexual assaults which have underscored India's worrying record on rape.

The attack follows a six-year-old being raped, strangled and left fighting for her life in Odisha and an 11-year-old being found dead after being abducted from a wedding and sexually assaulted with sticks.

The rise of rapes in the country hit a tipping point when protesters flooded the streets in national outrage after an eight-year-old girl was drugged, raped and battered to death in a Hindu temple near Kathua.

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Following the pressure the Indian government approved the death penalty last week for those convicted of raping children under 12 due to mounting pressure from protesters.

Prime Minister Narendra Modi has been criticised for his slow response to the protests but has now promised "to hang the people of demonic tenancies who misbehave with daughters".

He also told a political gathering on Wednesday: "There is a government in Delhi which listens to the hearts of people and decides on the basis of it."

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