Four persons have been awarded the life sentence along with a fine of Rs 10,000 in a murder case by the court of District and Sessions Judge Harish Anand.The murder was reported last year from Faidan village in the Nizampur area here. All four — Vinod, alias Lalla (20), Bachan Singh (67), Prahlad Tiwari (47) and Durgesh Tiwari (34) — were convicted yesterday.Rajiv Bhatia (35) was stabbed to death following heated arguments late at night. He was working as a private security guard in a Mohali-based warehouse and is survived by his wife and a six-year-old daughter.The incident occurred around 9.30 pm when three persons from the same locality stabbed him with a sharp weapon.