New Delhi, April 23 -- A 22-year-old IIT graduate, who is also the daughter of a senior Indian Revenue Service (IRS) officer, was allegedly raped and murdered at her home in southeast Delhi's Kailash Hills area on Wednesday morning.

Police said the prime accused, Rahul Meena (19), a former domestic help who had worked with the family for about eight months before being dismissed a month ago, has been arrested in connection with the case.

"The woman, who was preparing for the Union Public Service Commission (UPSC) examination, was alone in her house at the time of the incident and was found murdered in a room by her family members when they returned from the gym," PTI reported, quoting the police.

CCTV footage shows that Meena changed h...