This also should be taken with a pinch of salt. A few years ago KPK was auctionning several hectares of land in my region seized from a former BPKB head convicted in a graft case. They were all agricultural land but very well situated, in a close proximity of some major developments and it was worth a few M.
Considering it had been seized and was about to be auctionned by the KPK I thought it would be easy to locate, see the lands and take a decision. I was really willing to bid for several of the plots sold, considering the information given by KPK about the location. The auction was advertised a month or so before it was due to happen.
There was no sertifikat provided by KPK for any of the plots because they had not been able to locate and seize them, albeit one for each plot had been issued under various names.
I made several trips to the "suspected" locations, talked to BPN with all information I had in hand, talked to pretty much any civil servants in the Desa concerned who could give information like the Hukum Tua, SekDes, identified owners of possible neighboring plot...etc, I phoned, emailed and faxed KPK in Jakarta and even visited them in JKT during a trip planned for other business reason.
Despite all my efforts and time spent I wasn't able to locate with precision ANY of the plots. I dealt with many very helpful and concerned KPK officers but they were all as hopeless as I was. They knew there was some assets, they new were they possibly were but that was pretty much it.
Came the time of the auction, I decided not to bid considering the headache it could become to be the owner of some ghost assets I couldn't precisely locate.
Unsurprisingly no-one bidded. A year after, KPK tried again to auction the assets. Same result. I think it was around 2012. To the best of my knowledge the assets haven't find a new owner... nor the State got any money back of it.