Robin Hood Robber

You have witnessed a man rob a bank, but then, he did something completely unusual and unexpected with the money. He donated it to an orphanage that was poor, run-down and lacking in proper food, care, water and amenities. The sum of money would be a great benefit to the orphanage, and the children’s lives would turn from poor to prosperous. Would you:

a: Call the police and report the robber, even though they would likely take the money away from the orphanage, or
b: Do nothing and leave the robber and the orphans alone?