A 37-year-old man died after three neighbours allegedly pushed him off the top floor of a four-storey building in Noida, north India, reported Makkal Osai.
The shocking act on Sunday followed a heated quarrel about who would be the first to use a common tap which supplies water to the community.
Textile shop worker Istrafil Hussain went to take water from the tap around 7.45am when Jahangir, a neighbour, objected.
Istrafil's wife said in her police report that when an argument broke out, Jahangir, his brother-in-law Sabbir and brother Nazeer assaulted Istrafil before pushing him off the fourth floor.
Neighbours rushed Istrafil to the hospital where he was declared dead. Jahangir and Sabbir were arrested but Nazeer is on the run.
Police said Istrafil lived in the building with his wife, mother and son, and was the sole breadwinner for his family.