New Delhi, Feb. 23 -- Three women from Northeast India, including a Delhi University student, have alleged that a couple in south Delhi's Malviya Nagar threatened and hurled racial abuse at them during a dispute over dust from electrical work at their rented accommodation last week, police said on Sunday. A video of the incident was also circulating on social media. Police identified the accused as Harsh Singh and his wife Ruby, who live one floor below them in a multi-storey apartment, and said a case had been registered against the two on Saturday on the basis of a complaint by one of them. Deputy commissioner of police (DCP-south) Ankit Chauhan said under sections 79 (outraging modesty of women), 351(2) (criminal intimidation), 3(5) (common intention) and 196 (promoting enmity) of the Bharatiya Nyaya Sanhita. The accused have not yet been arrested. In the video, a woman is heard making derogatory and racially motivated comments against three other women. She then warns the three against "messing with them" because the man is the son of a "customs officer". She also threatens to beat them with a stick. They appear to be standing in the staircase area and a man is also visible. It was not clear who shot the video and HT could not independently verify its content. The incident took place around 3:30 pm on Friday, when the three women - aged between 19 and 23 - were getting electrical installation work done at their residence. During the process, some dust and debris allegedly fell on the flat couple's flat below, police said. The women alleged that the couple came up to their floor and picked a fight, using derogatory language targeting their ethnicity, insulting their modesty, and issuing threats....