A 52-year-old milk vendor was stabbed to death allegedly by his neighbour over a trivial row during the Pitru Paksha ceremony at his brother’s house in Sonnenahalli under Jnanabharathi police station limits on Sunday. The police have arrested Kirthi Manjunath, 27, a financier and Murthy’s neighbour. According to the police, Murthy stepped on Kirthi’s feet accidentally which led to heated …