A man identified as Navneet alias Santi, 45, allegedly stabbed to death his sister-in-law, Nidhi Kaushik, 39, who was the vice principal of a private school in Gurugram. The incident occurred days after Navneet returned from a de-addiction center. According to police reports, Navneet visited Nidhi in her house above Adarsh Public School, where she worked. Upon her arrival, he attacked her with a knife, continuing even when her teenage son tried to intervene. Nidhi and her son were rushed to the hospital, but Nidhi unfortunately succumbed to her injuries.