India's cabinet on Saturday approved the death penalty for rapists of girls below the age of 12, after Prime Minister Narendra Modi held an emergency meeting in response to nationwide outrage in the wake of a series of sexual assault cases.

Key points: Order requires Mr Modi's signature before it is made into law

Order requires Mr Modi's signature before it is made into law Decision comes after public outrage at alleged gang rape and murder of an eight-year-old girl

Decision comes after public outrage at alleged gang rape and murder of an eight-year-old girl There were 40,000 rapes reported in India in 2016, with 40 per cent of victims being children

The executive order amends the criminal law to also include more drastic punishment for convicted rapists of girls below the age of 16, government officials said.

The order, a copy of which was seen by Reuters, will come into effect once it is signed by India's president, Ram Nath Kovind.

But in the meantime, suspects can be prosecuted using the order.

India previously launched fast-track courts and a tougher rape law that included the death penalty after a gruesome assault on a young woman shocked the country in 2012, but India's rape epidemic has shown no sign of dying down.

Mr Modi will have to fight to retain public support in the general election next year. ( Reuters )

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There were 40,000 rapes reported in 2016.

The victims were children in 40 per cent of those cases.

The latest outpouring of national revulsion came after details emerged of the gang rape of an eight-year-old Muslim girl, Asifa, in a Hindu-dominated area of Jammu and Kashmir state.

Local leaders of Modi's Bharatiya Janata Party (BJP) had appeared to offer support to the men accused, adding to the public disgust.

Protests around the country were also prompted by the arrest of a politician from the BJP last week in connection with the rape of a teenager in Uttar Pradesh, a populous northern state that is governed by the party.

More recently, a sexual attack on an 11-year-old girl was reported in Mr Modi's home state of Gujarat.

The post-mortem revealed the girl had been tortured, raped, strangled and smothered.

Cases to be completed within two months

Mr Modi's failure to speak out soon enough during the latest bout of public anger fuelled criticism that his government was not doing enough to protect women.

With a general election due next year, Mr Modi moved swiftly to remedy that negative perception by holding the emergency cabinet meeting as soon as he returned from an official visit to Europe.

The cabinet also prescribed measures for stronger punishment and faster trials in rape cases, a government document seen by Reuters showed.

In cases of the rape of a girl below the age of 16, the cabinet increased the minimum punishment to 20 years from 10 years.

The penalty for the rape of women was raised to 10 years from seven years.

The document made no mention of the rape of boys or men.

Sorry, this video has expired Journalist Barkha Dutt says the public were disappointed that women in India's Cabinet didn't jump to condemn the alleged attack.

India's judicial system has been unable to keep up with the growing number of rape cases.

The cabinet also recommended mandatory completion of rape investigations within two months and advised that trials should also be completed in two months.

"Government has taken serious note of incidents of rape in various parts of the country," the document said.

"While expressing deep anguish over such incidents, it has been decided to devise a comprehensive response to deal with the situation."

The cabinet also approved the establishment of more fast-track courts to deal with rape cases, the appointment of more public prosecutors, and ordered police stations to be equipped with special forensic kits, among other steps.

Sorry, this video has expired Protests and vigils have been held across the country following a string of violent assaults.

Reuters/AP