Dilemma:To Be or Not to Be

The case is about an Assistant Manager working in the plant of a leading steel manufacturing company of India. The protagonist while going to plant where he was posted witnessed an accident that took place before his eyes. He saw a car in high speed hitting a man, the driver was talking on the mobile phone. Immediately after the accident the car sped away. The man was thrown five meters away and was profusely bleeding. The passers-by including the protagonist stopped and saw the man, picked him up and took him to the dispensary for medical aid from where he was referred other hospital for higher treatment. The man's chances of survival was very low because he had suffered major head injury. The protagonist knew the person and the car which had hit the man but was in a dilemma because the culprit was his own boss! Should he complain or shouldn't he?.