Crash site investigators found human remains amid the wreckage of Steve Fossett's small plane on a remote California mountain, the chief of the National Transportation Safety Board (NTSB) said.
Parts of the small plane lost more than a year ago were scattered over a large debris field at around 10,000 feet (3,048 metres) on a mountain near the Nevada border, and search crews found a "very small" amount of human remains, according to Mark Rosenker, acting NTSB chairman.
"Did we find some? Yes, a very, very small amount," Mr Rosenker said.
Mr Fossett (63) vanished after taking off in a single-engine aircraft on September 3rd, 2007, from the airstrip of hotel magnate Barron Hilton's ranch in Nevada, sparking a long but fruitless search.
The finding of human remains may close months of debate over whether the millionaire adventurer actually died, although Mr Rosenker said local officials would be responsible for examining the remains.
Mr Rosenker at an earlier news conference noted that a judge had declared Fossett dead.
"Our job is to determine what happened on the mountain," he said. "Given the length of time that wreckage has been there it is not surprising to come into a debris field and not find a lot of human remains."
Clues to Fossett's disappearance came suddenly this week when a hiker not far from Yosemite National Park found identification cards and cash, prompting a full-on search that uncovered the crash site.
Investigators confirmed on Thursday the small plane was the one in which Fossett took off a year ago.
Parts of the aircraft were scattered over a swath of mountain 150 feet (46 metres) wide by almost 400 feet (122 metres) long. A helicopter ferried investigators close to the site and will be used to haul away pieces of the plane today, before a snow storm sweeps in.
Despite weeks of extensive land and air searches after the adventurer disappeared last year, no wreckage was found, and he was declared legally dead in February after investigators concluded his plane was destroyed in a fatal accident.
"Now that the plane has been found we can finally bring closure to Steve's wonderful life," Richard Branson, Virgin Group founder and Mr Fossett's friend, said in London.
Reuters