Judge Maxwell Wiley ruled the videotaped confession of Pedro Hernandez can be used in his murder trial.
Durst, who has long fought off suspicion in his wife's disappearance, wants to subpoena prosecutors.
Marisha Cheong, 24, may have been thrown off a bridge into Jamaica Bay, sources said.
Jose Ramos, a suspect in the disappearance of Etan Patz, served 27 years for molesting two other boys.
Pedro Herandez's next court appearance in the murder of Etan Patz was moved to Oct. 1.
Manhattan DA Cy Vance said it was too early to say whether Pedro Hernandez killed Etan Patz.
Etan Patz's family posted a sign on their door telling the media not to bother them.
Pedro Hernandez allegedly confessed to killing Etan Patz in the 1980s, but no one told cops, reports say.
No "obvious" human remains were found in the in the search for Etan Patz at 127 Prince St., cops said.
The "stain of interest" was found at 127 Prince St., where the FBI is searching for Etan Patz.
Investigators have taken out concrete floor of Prince Street building where Etan Patz may be buried.
Alexander Vorlicky, 14, turned up unharmed and was back with his family days after disappearing.
Michael Mele was indicted in the death of Laura Garza, who was seen leaving a Chelsea club with him two years ago.
Thomas Wopat-Moreau, 22, was found 480 feet from the Taconic State Parkway, after disappearing 4 days earlier.
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