I would say it's not too late to call 911. If you seen the room he went into, they will find him. After this long of deliberation, you are sure what you saw, and you still feel the man should have consequences. I most generally tend to mind my own business, but someone has to look out for children that are being abused. I myself believe in a good ole fashion spanking when warranted. Lord knows I had my share. But, that is another subject to debate. Abuse (choking) is another. Do what is right, you were the witness.