The initial autopsy on the remains of Brian Laundrie did not uncover a cause of his death and a more intensive examination will be done, a family lawyer said.
Laundrie was the subject of a manhunt for more than a month as investigators searched for clues in the killing of his girlfriend, Gabby Petito, during a cross-country van trip.
Skeletal remains found in a Florida nature preserve were positively identified last week using dental records, according to the FBI.
Steve Bertolino, the Laundries’ attorney, said he was told by police the autopsy by the Sarasota county medical examiner did not produce concrete results.
“I was told the manner and cause of death were not determined and the remains were sent to an anthropologist [for] further evaluation,” Bertolino said.
The medical examiner’s office declined comment, as did the FBI office in Denver that is leading the probe.
Eventually, Laundrie’s remains will be cremated and no funeral is planned by his family, Bertolino said.
No information has yet been released on what investigators found in a backpack and notebook found with Laundrie’s remains.
The body of Petito, 22, was discovered last month on the edge of Grand Teton National Park in Wyoming, one of the places the young couple had visited on the trip they documented through social media videos.
An autopsy concluded Petito died by strangulation and that it was a homicide. Laundrie, 23, was listed as a “person of interest” but charged only with fraudulent use of a debit card.
His remains were found in a nature preserve not far from his family’s home in North Port, Florida, where he and Petito had been living. Both were from Long Island, New York.
Laundrie returned home alone on 1 September from his trip with Petito. Her body was found on 19 September in the Wyoming park and authorities say it had been there for about a month.
Laundrie told his parents on 13 September he was headed to the Carlton Reserve park in Sarasota county. That was the last publicly known contact anyone had with him.