Melvin White

Melvin White's fingerprints were on the bullets fired during the shooting murders of Patrick Harvey and Richard Dent.

Biography
Batman pursued the lead, and discovered Gotham City Honor Guard tied up in Melvin White's apartment during the memorial of Commissioner Loeb.

Behind the scenes

 * Some believe this concluded that the Joker was Melvin White, when nothing stated that he was the shooter. Also, GCPD could not identify the Joker, do Batman would likely be no more successful from a similar fingerprint database.