Investigators also are unclear about Rockefeller's education history, the official said, despite reports that he commonly told acquaintances he attended Yale and Harvard. Some people have told authorities that Rockefeller said that his parents died in a car crash when he was young; others were told he was homeschooled as a kid.
The Boston Police Department last placed Rockefeller at Grand Central Terminal in New York City. He had told Ang that he was heading for a boat he had recently purchased, a 72-foot catamaran called Serenity.
Boston police detectives have been sifting through stories that Rockefeller told friends in Boston about wanting to travel to Alaska, Peru and Bermuda on the yacht, according to a high-ranking police official with direct knowledge of the case. A Boston police official said Tuesday that Clark Rockefeller told one acquaintance that he used "$300,000 in gold bars" to buy the boat, and today officials confirmed that bank records show Rockefeller recently took out a large sum of money to exchange for gold.
Late Tuesday, Boston police released two photos of dresses they believe Rockefeller may have purchased on Sunday before the alleged kidnapping.
A Delaware woman came forward Tuesday and reported seeing a well-dressed man who matched Rockefeller's description and was with a young girl at a car dealership. The sighting has not been confirmed, but authorities are investigating the claim.
Rockefeller, who has been connected to several aliases, is not a descendant of John D. Rockefeller, the wealthy New York industrialist, but he apparently did not dissuade other people from assuming they may be related.
When the Rev. Brian Marsh of Trinity Church in Cornish, N.H., where Rockefeller and Boss attended church until about two years ago, asked about Rockefeller's famous last name, he said Rockefeller didn't answer him directly.
Instead, he took out a pocketknife with the name "Nelson Rockefeller" on it, Marsh said. "He implied a connection."
Other neighbors in Cornish, a former artist's colony where Rockefeller and his wife Sandra purchased a historic property, described the kidnapping suspect as "elusive" and "vague" about personal details. They said he was a doting dad, but described him as paranoid, noting that he built a mote around the property and set up a security perimeter.
Rockefeller, known for his preppy attire, also boasted an extensive art collection that he said included several original works by Mark Rothko.
Rockefeller and Boss, who reportedly married in the early 1990s on the Massachusetts island of Nantucket, divorced in 2007. A judge impounded the divorce case file at the couple's request.
Boss, an executive level consultant who attended Harvard Business School, was awarded custody of their daughter and successfully changed the child's name from Reigh Rockefeller to Reigh Boss.
Rockefeller was allowed supervised visits with his daughter. On Sunday afternoon, when the alleged kidnapping took place, the child and her mother were in Boston from their current home in London so that Rockefeller could see his daughter.
Ordinarily, Massachusetts authorities do not use the Amber Alert system for custodial kidnappings, but after the social worker was injured trying to stop the SUV that snatched up the child and her father, investigators agreed that there should be a statewide manhunt for Rockefeller and his daughter, said BPD spokeswoman Elaine Driscoll.