However, human rights organisations including Amnesty International have called for investigations to determine if these were extrajudicial killings.

"Extrajudicial killings are not a solution to preventing rape," said Avinash Kumar, executive director of Amnesty International India.

The 27-year-old rape victim's charred remains were discovered last Thursday - leading to outrage and protests over alleged police inaction.

After news of the killings broke, the victim's mother told the BBC, "justice has been done", while neighbours celebrated with firecrackers, and thousands of people took to the streets to hail the police.