Filing a false police report is a misdemeanor and will land the one who made the false report in jail for 1 year and give them a $1000 fine.
When your son pawned the chain for $3,000. What did he do with that money?
There is another victim that your son stole from, that victim had his things returned from the pawnshop. The pawnshop is the third victim of your son and are out of pocket $3,000.
If you're trying to cover-up the story or potentially leaving incriminating information out to favor your son, it's not going to help your son or yourself when you get in the court room.

