Despite the use of a state Highway Patrol helicopter, the State Bureau of Investigation, the FBI and about seven law-enforcement agencies, the investigation into the deaths of Nellie Bradley, 71, and Dorothy Hobbs, 74, has turned up little information.
"We're just following up on every lead, and we're asking everyone to definitely keep calling in," said Hertford County Sheriff Juan Vaughan.
Vaughan said the most productive tips have come from motorists who traveled on state Highway 35 between Murfreesboro and Boykins, Va.
Authorities, however, have been able to retrace the sisters' steps. They left their homes on Friday, and then drove to Boykins, where, at about 4 p.m., they dropped off a donation to Relay for Life.
More than three hours later, their bodies were discovered on a farm path just north of Murfreesboro. The black Ford sedan the two were last seen traveling in was discovered in Boykins.
As for other details on suspects, motive and autopsy results, Vaughan would not comment.
A funeral service on Wednesday honored the two sisters, who authorities said, shared a passion for traveling the back roads of Virginia and North Carolina.
Authorities believe it was their daily habit of stopping to help others that may have led to their deaths.
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