After nearly a year-long investigation, police say they think a single serial killer is responsible for 10 sets of human remains found along a remote stretch of Long Island, New York beach.
He noted the killer did not "necessarily do the same thing all the time."
"What's common here is the dumping ground," he said.
Dormer previously said that only the first set of remains found -- which included four females uncovered in December -- could be the work of a serial killer or killers.
It is not clear what prompted the change.
The woman whose disappearance triggered the searches, 23-year-old Shannan Gilbert, remains missing.
The New Jersey woman was last seen in May 2010 at a private party at a home in Long Island's Oak Beach community.
Police say they have sifted through more than 1,000 tips related to the case.
The four female bodies uncovered in December have since been identified. Like Gilbert, they advertised for prostitution services on websites such as Craigslist.
The bodies were found stuffed in bushes along a quarter-mile strip of beachfront property, according to police. More human remains were found on March 29 and April 4.
Suffolk County District Attorney Thomas Spota said in May that those remains were not believed to be connected to the first four victims. In September, authorities released composite sketches of what two victims might have looked like.
Spota was not immediately available for comment Wednesday regarding police statements that the killings are instead thought to be the work of a single killer.