You are an eyewitness to a crime

You are an eyewitness to a crime: A man has robbed a bank, but instead of keeping the money for himself, he donates it to a poor orphanage that can now afford to feed, clothe, and care for its children. You know who committed the crime. If you go to the authorities with the information, there's a good chance the money will be returned to the bank, leaving a lot of kids in need. What do you do?