KILLER FROM THE MOUNTAIN

An ambulance was going too fast on highway, suddenly a bullet pierced through the drivers heart and the ambulance hit on a tree. A police officer saw the accident and ran towards the ambulance. At first he opened the back door of the ambulance, he was astonished of the sight he saw..there was a pregnant women and a nurse. He checked the pregnant women whether she was dead or not, he was out of breath as it was his first situation like this in his whole life. He checked her pulses, yes, the heart is beating. He suddenly checked the nurse, but it's too late for her. He ran to the highway and stopped a car, and asked for help. The officer rushed the pregnant women to the hospital. It was an another case file opening for the police, there was only one proof for them, it was the bullet, on that driver's chest. They didnot have another proof and they searched everywhere but was in vain.