As the fire raged, the women – from the Meitei community, like the accused – broke down the walls and roof of the house with sticks.
On Friday, another mob of women destroyed the house of a second accused, reducing it to ash and bars, photographs showed.
India is generally traditionalist, conservative and patriarchal, but the Meitei have a history of women’s activism, with women having a more prominent role in society than elsewhere.
The video of the naked women sparked protests across India on Friday, with demonstrators calling for the state’s chief minister to step down over the delay in taking action.
“Can normal people do these things?… Even cats, dogs, animal(s) never committed these kind of filthy act,” said one demonstrator near Imphal, where hundreds of women gathered to protest.
“This is not even how human beings treat other human,” she said.
India’s Supreme Court warned Modi’s government Thursday that if it does not act, “we will”.
Authorities in Manipur, led by the ruling Hindu-nationalist Bharatiya Janata Party (BJP), said police had taken action as soon as the video surfaced on social media.
A “thorough investigation” was underway, the state’s chief minister N. Biren Singh tweeted Thursday.