New Delhi, April 16 -- In a familial hate crime incident, a 46-year-old man, along with his 20-year-old son, killed his 22-year-old daughter and a 35-year-old cousin over the suspicion of the duo being in a relationship on Tuesday evening in Delhi's Bhajanpura, the police said.

According to the sequence of events shared by the police, the father first tied up his daughter's limbs with her chunni, slit the throat of his cousin and then attacked his daughter with the knife, killing them both. The deceased were identified as Shaina Qureshi, and Danish Khan, and the accused as Mohd Shahid and his son Kudush Qureshi,who informed the police.

The father and daughter started fighting when Shahid caught Shaina speaking to Khan on the phone. Shah...