New Delhi, March 6 -- A 26-year-old man was killed and at least three people injured after clashes broke out between two families from different communities in Uttam Nagar's JJ Colony in southwest Delhi over a water-filled balloon thrown by a minor girl during Holi celebrations, police officers said Thursday. By Thursday evening, police said they had arrested four people and apprehended a minor boy - all from the Muslim family involved in the incident. Heavy police deployment was made in the neighbourhood as the clash sparked communal tension, with several people gathering outside the Muslim family's house and allegedly attempting to attack it, said a senior police official who asked not to be identified. The police presence prevented furth...