Angry protesters took to the streets of Alahabad in northern Indian state of Uttar Pradesh, where two teenage girls were found hanged after being gang-raped.
Authorities in Uttar Pradesh, which has a long-standing reputation for lawlessness, are facing growing criticism.
More top news
The Grammy-winning singer posted a picture of the two on his Instagram saying the two got engaged right before the new year.
British Airways said it was taking the matter "extremely seriously" and is assisting police with their enquiries.
The rest of this weekend will see further spells of rain or snow across the UK. Icy roads expected