New Delhi, May 6 -- Caste-based abuse triggered the chain of events that ended in the murder of 26-year-old Tarun Butolia during Holi celebrations in March, the Delhi Police said in their charge sheet filed earlier this week. The police have named 18 persons as accused in Tarun's murder case and also accused them of being involved in an unlawful assembly. Two minors have also been booked as "aides" in the murder and a preliminary inquiry report (PIR) has been filed, police said. The charge sheet, a copy of which was accessed by HT, has been filed under sections of murder, mob lynching, voluntarily causing hurt, attempted murder, unlawful assembly, and house trespass of the Bharatiya Nyaya Sanhita, and sections 3(1)(r), 3(1(s), 3(2)(v) and 3(2)(va) of the SC/ST Prevention of Attrocities Act, 1989. On March 4, a minor from Butolia's family was playing Holi when a coloured water balloon fell on a woman (neighbour) from a different community. Police said the dispute started when water splashed on her clothes. The charge sheet states that at first, a call was received about a quarrel between neighbours. Later, Tarun sustained grievous injuries and was admitted to the hospital, where he died. Based on the girl's and her family's statements, the charge sheet states that the dispute started after the accused hurled casteist slurs. "During the course of the incident, the accused persons allegedly used caste-related abusive and derogatory words against the complainant party, knowing fully well they belong to the SC community. "...(slurs) How dare you splash water on me.I am calling my entire family. They will pick you up and rape you.." reads a recording transcribed into a quote in the charge sheet. The charge sheet is more than 500 pages long and names 18 adults, including three women. Police separately filed a PIR against two minors who are in a juvenile detention centre. Police said the main evidence is the elaborate statements of Butolia's parents, grandparents, siblings and other family members, along with locals. A senior police officer, who did not wish to be named, said, "We have stated in our report that the accused resorted to rioting like situation after a water balloon was accidentally thrown on a woman." Police said the families often fought over parking and garbage-related issues....