NEW YORK – While prosecutors weigh what to do about a suspect who surprisingly surfaced this spring in the landmark 1979 disappearance case of Etan Patz, the man who was the prime suspect for years is about to go free after more than two decades in prison for molesting other children.

These two threads in the tangled story are set to cross next month, a twist that evokes decades of uncertainties and loose ends in the search for what happened to the sandy-haired 6-year-old last seen walking to his Manhattan school bus stop.

The new suspect, Pedro Hernandez, has been charged with Etan's murder after police said he emerged as a suspect and confessed this spring. But there's no public indication that authorities have found anything beyond his admission to implicate him, and his lawyer has said Hernandez is mentally ill.