Car damaged

My neighbor had his car smashed up by another car when he was shopping at a mall. He was shocked at the sight of the damage when he returned from his shopping. It must have been caused by another car which was driven into his either on purpose or otherwise. The driver of the car was nowhere to be found.
While my neighbor was examining the damage, a stranger approached him and told him he had witnessed the incident. The stranger gave the description of the driver and the car plate numbers to my neighbor. A police report was lodged. The case is under investigation. My neighbor presented a small gift and thanked the witness for his kind deeds.