Well it appears that at least two more items have been stolen from Pere Lachaise and once form Montmartre. (It seems we can say stolen now since it's fairly obvious they are missing and the reason for their absence can be reasonably assumed to be theft.) That brings the total, I believe to at least nine pieces of artwork looted from Paris cemeteries so far.
A bust (?) of Aimée DESCLEE (division 70) is missing and so is a medallion of Henri FERNOUX (division 52). The Conversation at Pere Lachaise is looking for a photo of Fernoux so if by any chance you have a copy by all means send it along.
In Montmartre the bust of Edgard POUGET (division 5) is missing (photo below)
So far, from what I have seen and heard, it appears that artwork has been taken from at least three cemeteries so far: Montmartre, Montparnasse and Pere Lachaise.
The police are apparently involved now, at the request of the mayor of Paris, and one can only hope that the stolen items are recovered soon.