The excavation of a Manhattan basement yielded no obvious human remains and little forensic evidence that would help solve the decades-long mystery of what happened to Etan Patz, 6, who vanished while walking to a bus stop 33 years ago.
Monday, FBI and police completed a four-day search of a basement that began with a search warrant after a cadaver-sniffing dog detected the scent of possible human remains. The basement, once the workspace of a handyman, is down the street from where Etan's parents still live and along the route he would have walked to reach his school bus stop when he vanished May 25, 1979.
Though the search was over, some of the material gathered was still being examined, and officials were continuing to pursue leads and interview people.
Investigators found a stain on a piece of wall that was tested on site and did not contain traces of blood, according to two law enforcement officials.
FBI officials sent the piece to a Quantico, Va., lab for further testing. Some hairs also were collected, though it's not clear if they were human, and they also will be tested, one of the officials said.
The focus of the case shifted recently to Othniel Miller, who is now 75 and lives in Brooklyn. In 1979, Miller was a handyman who used the basement as a workspace.