There is a report item link on every listing.
Find the question mark in a circle at the bottom right of the listing.
Then follow this:
Report 'product or listing'
Choose 'item not allowed'
Choose 'stolen property'
Add the cime number and other brief details to 'additional details'
Click 'submit report'.
Don't be surprised or disappointed if the items are not removed. If Ebay take any action against the seller or sellers you won't be told what has happened. The official advice from Ebay if you see stolen items on the site is to report it to 'law enforcement' which you have already done.
"There are two ways to be fooled. One is to believe what isn't true; the other is to refuse to believe what is true.”
Søren Kierkegaard, Danish philosopher (1813 - 1855)