India, June 25 -- "Jovial, stylish, a fantastic photographer, but an equally simple person."

That is how neighbours and acquaintances remember 22-year-old Mayank Lohar, who was allegedly stabbed to death in a local train late on Tuesday night by a fellow passenger, following a petty dispute over closing the coach door during heavy rains.

Mayank was the youngest of four children of Ramesh Lohar, a driver, and Gyana Lohar, a homemaker. His elder sister, Megha, questioned how a passenger could carry a knife onto a local train. "People just stood there and watched as my brother was being stabbed. Had someone intervened, he would have survived," said Megha, a law student.

Recalling a similar incident in February, when a mathematics professo...